The Odd Alliance vs Chaos & Order: The Rebuttal
For the record... even before your rebuttal comes up W... I realized after I posted that I should have utilized Dick in Gotham in some way. Though I know nothing about that era of Gotham or Dick's connection to it, so I'll go ahead and give that advantage to you... albeit a small one. And with that, on to the rebuttal.
Prep-Time
As risky as it is to split up, the team decides to do just that during prep-time. Actually, it's Dick that really pushes this strategy, knowing what he knows about Deathstroke and his penchant for putting teams of villains together. Of course, that is going to be a major problem with the Alliance. A team of villains/ruthless people. Not much team loyalty there, or incentive to work together. Whereas, C&O are heroes, with one villain who knows how to work with others he doesn't particularly like for the good of the cause.
Yes, I do acknowledge that a team of villains tends to not be as apt to work together, but I also deal with that point in every write up. At this point Vulcan, Onslaught, and Blink have allied for 3 week straight and have learned to work together. Onslaught is about mutant supremecy, and Vulcan is a mutant with massive potential and power... thus, Onslaught has no qualms working with Vulcan, and while given the sense of leadership and power Vulcan would be just fine having Onslaught as a sidekick. Blink is a follower anyhow (as seen in Necrosha) so following the two powerhouses is within her character. Anti-Vision and Deathstroke are newbies this week but Deathstroke isn't one to cause ruckus in a team up and would be more willing to see how it plays out and bide his time. He'd work better with this team of villains than against them. And Anti-Vision is a bit of group guy having been one of Proctor's people. It'd be a wierd team... an Odd Alliance... but they'd be working together quite well thank you... better than Exodus on a team of heroes fighting a cause that has nothing to do with mutant supremecy, which is often times his fight.
And then, even if Deathstroke is engaged, how to defeat the opposing ubers because, as the team notices, they're fairly evenly matched. Those fights could probably go on for a long, long time. And will the lower members of the team even be able to help? Well, it may just come down to that.
The team would know nothing about Vulcan and potentially little about Onslaught, though with Exodus that may be debatable. The level of Exodus's knowledge cannot be known, however, as he was incapacitated during Onslaught's reign and might have only heard about him second or third hand. There is near nothing to prepare for, and that goes for Blink and likely Anti-Vision as well.
Battle-Time
Since Deathstroke isn't likely to let his team split up (well, the ubers can split up since the fallout from their matches will likely be devastating to anyone around), it's important to take away his team. Getting Vision out of the picture is easy enough. Since Beetle will be in the air, there's not much anyone but Vision can do to get him. So the synthoid had no choice but to follow. Of course, he's not to frightened of the Beetle, especially when all of Blue's attacks just go right through him, and he puts Blue on the run from his own energy blasts.
Technically, Blink could easily just blink up there and pull him back down to the crowd... it doesn't have to be Vision. This part of the plan is faulty. Heck, if you care to stretch and not call it an assault, Onslaught could telekinetically keep everyone grounded. Blue Beetle flying away is no promise of causing Vision to follow. In fact, it could easily be a quick defeat for him if Blink teleports up there and teleports, say, only half of him back down to earth.... just saying.
That leaves Blink and Deathstroke. Removing Blink does no good since she can just teleport herself back to Deathstroke's location. So Boy Blue's job is to teleport Deathstroke. How does Blue know where Stroke will be? This is Gotham. 1800's Gotham or not, there's really only two places Slade would feel a fight was fitting: the batcave, and the clocktower. But Dick's going to make sure that Slade doesn't have that kind of advantage, so he has Blue teleport him to the one place where they'll be on somewhat even footing. Arkham Asylum...
How would they be able to plan this without knowing anything about Blink? I'd imagine Onslaught would be protecting her mind, and Exodus would know nothing about her. This is a huge freakin' city and Deathstroke is a strategic genious. I don't see him being so predictable. If anything he'd expect Dick to expect that and come up with something to counter it. Knowing his location is a longshot, and taking him from it would be just as difficult. This portion of the plan is a stretch in my opinion.
Even by herself, Blink will be difficult to deal with. But, Blue's Witching Cloak will protect him from harm. If she teleports away, he can follow. If she teleports him, he can come back. This will likely turn into a teleport fight.
They won't know to deal with it, and they wouldn't know that Blink does more than just teleport. Example, she could teleport his cloak off of him entirely, leaving him powerless. Now yes, he could likely return the cloak to him, but chances are she'd kill him with a dispersing before the reunion with his Cloak can happen. She's a lot more cruel than they'd expect and to the best of my knowledge her use of her powers are nothing like he'd be able to predict or even protect himself against.
Despite all his powers. Boy Blue holding out in a teleporting battle with Blink is an ill-conceived plan. She'd take him out 5 seconds flat before the power of his cloak can do much at all.
So in these initial plans we have a longshot of Boy Blue finding and teleporting Deathstroke to where Nightwing is obviously waiting, and then he teleports to find Blink and performs a teleporting battle with her... all the while Blue Beetle just kinda takes to air, hoping that Anti-Vision follows (again, not knowing several of my characters and whether or not any of them woudl follow, or if most of them would follow). All three of these opening scenerios seem a bit reaching for me. Chances are, none of them would go as planned... and this is all assuming Deathstroke, Onslaught, and Vulcan haven't come up with some plans of their own already to put into action and allow themselves to be separated without issue.
Back to Beetle and Vision whose fight has brought down a number of buildings and continues to rip the city apart. But Boy Blue, not getting much of anywhere on his own, decides to use the destruction to his advantage. he teleports into it, looking for his team mate. And when he comes upon them, Beetle proves to be enough of a diversion. Snicker-snack!, and Vision is cut in twain (or however many pieces it takes), since the Vorpal Blade can cut through anything. And when Blink finally catches up, she's going to be dealing with more than she bargained for. A teleporter she can't hurt, and an opponent with sensors that can track her anywhere in the city. She won't last long against that duo.
Okay, so here's my issue here... if Blue Beetle is weaving around buildings and such and Vision is going right through them, he'd likely catch up fairly easly... so then why wouldn't he just kinda do the classic Vision move and phase his arm through the Beetle's head and render him unconscious right then and there? In the scenerio you give, chances are it woudln't last long and Anti-Vision would stop Blue Beetle fairly easily and then Boy Blue would be alone against Anti-Vision and Blink, which he wouldn't be able to stand a chance again... although I already said I didn't think he stood a chance against Blink alone either.
Dick and Deathstroke are probably bloody and exhausted. In fact, Slade could have actually won this fight. It wouldn't be all that surprising. But, he's not going to be able to do much against the Blues, or be able to hide from them. He'll go down easier than Blink.
Again with the underestimating Blink. She's Aza Chorn-light. Boy Blue, Blue Beetle, Dick Grayson... she has the power to take each of them down quickly as needed. I don't see that help coming for Dick as planned, as I've layed out already how the separation plan was ill conceived (and really... what's the benefit of separating when you're only familiar with about half of your opponants? Dick stranding himself with someone who can likely (by your own words) defeat him is just Dick being easily eliminated.
Personally, at this point, I feel that Boy Blue and Dick would both be eliminated. Blue Beetle still has a fighting chance but with Blink and Deathstroke coming to Anti-Vision's aid he wouldn't last long. I feel that the separation plan would be your team's downfall. The plan is so hectic and chance-ridden that I highly doubt much help would come to Vulcan or Onslaught as you depict next.
At this point, the uber fights could still easily be going on because no one had a real advantage over their opponent. But, as planned, the time to split up is over, and now the team starts coming back together. So the Blues finally arrive to help engage Vulcan. And with Vulcan now having to deal with three opponents, Atom can finally risk the gambit Dick planned for him. He begins pulling all the energy out of Vulcan. And, while Vulcan tries to resist (and ward off the Blues), he only psionically manipulates energy. Captain Atom is energy, and controls it directly. Soon enough, Vulcan is collapsed on the ground, or weakened to the point where the Blues can stop him.
This is majorly underplaying Vulcan. He's a top of the line Omega-Level (stated in the comics potential Omega-Level Plus) energy manipulater whose been shown to pull energy out of things, absorb it, disperse it, transform it, etc. Anything that Atom pulls from him he can still pull right back. In fact, if Captain Atom IS energy then that gives Vulcan an advantage, as Atom could control the energy Vulcan gives off while Vulcan can control the energy that Captain Atom IS. So he might be able to make Captain atom go boom or something to take him out, who knows... and like Wiki said... if Captain Atom does manage to pull all that energy out of Vulcan, it's an instant defeat for Atom as he'd overload and teleport away from the playing field and the match, leaving Vulcan to continue his battle as well, and leaving Chaos & Order without one of their ubers. Captain Atom is EXACTLY the type of uber that Vulcan could take out. With all that energy between them, bad pairing for Captain Atom[q
Now the team has to deal with a very, very unstable Captain Atom. And when Atom becomes unstable, it's usually never a good thing. Luckily, he's got the perfect target to release all that energy on. Before Onslaught can mount a defense to both Exodus and Atom, the Captain releases all that power in a blast. In fact, if need be (and he's done it before when too amped up) he could release that energy in a mighty explosion. Preferably he would do this after grabbing Onslaught and flying up into space or out over the ocean. But if he were to even detonate accidentally, Exodus can teleport away, Boy Blue would still be unharmed, and Atom would be able to reform himself.
So Onslaught couldn't just magnetically or telekinetically protect himself from Captain Atom as well, and then just continue on with the battle? Not to mention he has metallic skin. Onslaught could possible use this to his advantage, controling the "bomb" and surprising Exodus or anyone else with the explosion. Sending Captain Atom at Onslaught will do nothing to help Chaos & Order in the match, only hurt them. Not to mention, if all of Vulcan's energies weren't enough to make Captain Atom time travel out of the battle, what would encountering the energies being emitted by the Onslaught/Exodus battle do? Obviously this should be plenty, but even if you say it's not, Onslaught can still block the attack. And with Captain Atom useless against Onslaught, none of the others have the firepower to harm Onslaught.
Remember, Exodus was shown to be close to an equal to Holocaust, but still lost to him. Onslaught was shown to master Holocaust so that Holocaust served him. They're both powerful telepaths, but Onslaught is on a while different level from Exodus, and it shouldn't be too difficult with any level of distraction for Onslaught to gain a mental pinch on Exodus's mind and siphon mental energies from him, weakening Exodus and strengthening Onslaught. None of the rest of the team can do much to Onslaught, and with Exodus defeated, they're all just one mental bolt away from defeat.
And so the quick read version...
1) Dick's making plans to challenge a team in a way that shouldn't be possible with him not knowing anything about Blink or Vulcan, and likely not much about Anti-Vision or Onslaught. This plan then must rely on a lot of chance and coincidence to actually work as shown.
2) Blink and Vulcan underplayed and would likely (most certainly) win their battles and alter the whole match.
3) The endmatch isn't likely possible as Captain Atom exploding can be blocked by Onslaught, and more importantly used against Captain Atom's own team thanks to his metalic skin.
4) With no Captain Atom bomb there's little to nothing Chaos & Order can do to take out Onslaught, let alone Vulcan and/or Blink.
Winner - Odd Alliance