1. Now both Mary Jane and Carlie have shown up at Peter's new job with lunch for him, which Peter finds VERY awkward. When he asks what they're really doing there, notice that Carlie says that she's primarily there because she's investigating the "superhuman crime scene" as part of her job. Mary Jane, on the other hand, is there primarily because she heard about the Hobgoblin's attack and, due to the fact that she's knows Peter is Spider-Man, was worried about him. See how, in the first panel, Carlie is giving MJ a sideways, apprehensive glance while MJ looks completely relaxed and at ease? Then, in the next panel, once MJ tells Peter that she wanted to see if Peter was okay, Carlie is suddenly hugging Peter like there's no tomorrow, almost as if she's choking Peter. It's as if she's saying "Hey, I care about Peter, too!" It gives the impression that Carlie's job as CSI investigator is the most important thing in her life and that her relationship with Peter is an afterthought until it appears to be threatened by a rival. And of course, MJ is taking cues from Peter and coming with a logical reason for being there, showing that they are still on each other's wavelength.
2. The food both Carlie and MJ have brought for Peter could be symbolic of both women. Carlie has given Peter the burger, which could be described as "meaty," which is also defined as "full of substance or interest." MJ brought Peter doughnuts, which can be described as being "sweet" and even "savory." And Peter is attempting to eat both of these meals at the same time while profusely sweating. It suggests that he's trying to please both of these women and, subconsciously, is still undecided between them, even though he is no longer with MJ and is currently dating Carlie.
3. When he's bragging about his new job, it's Peter himself who accidentally lets it slip that he worked for Tony Stark, which naturally piques Carlie's interest. And Peter, realizing he's risking exposing his secret identity, can't really figure out a good enough excuse...until Mary Jane comes in for the save. Also, her saying "That's the perfectly logical reason we lived at Stark Tower" is not only an attempt at deflecting Carlie's suspicions, but is also a rebuke towards Peter, as if to say "That's how should explain it in the future, tiger." And notice Carlie's facial expression when she says "With supermodel girlfriends?" She's clearly pissed. No wonder Peter is doing a facepalm.
4. Then comes the moment in which we get the "blah blah blah (something MJ wouldn't understand)" dialogue between Peter and Carlie. Now Peter, of course, has a history of lapsing into scientific and technical jargon whenever he gets excited about something, which, given how long MJ has known Peter, is something she'd be used to. However, in light of the fact that Carlie has just been previously reminded that Peter and MJ used to be a couple, her conversing in equally scientific and technical jargon with Peter could be her passive-aggressive and spiteful way of telling MJ, "You may be a glamorous supermodel and more attractive than me, but I can better relate to Peter than you ever could." And MJ, when she tells them she has to go see a "(fashion celebrity Pete and Carlie never heard of)" may be indirectly saying to Carlie "If you're trying to make me look stupid, well two can play at that game, Missy." And of course Peter, being the nice but clueless guy that he is, promises MJ he'll record her program in spite of never hearing of the guy she'll be interviewing, while Carlie is probably all too happy to see MJ finally leave.
So, in light of this, this could be Slott's way of setting up another "Betty and Veronica" that poor Peter often finds himself getting stuck in, with Carlie as the "Betty," MJ as the "Veronica." Or would it actually be the other way around?
