As was stated before, we don;t know the layout of the Superheros in the Smallville universe. There might be an extremely active Justice League that could handle all the threats that come up, and c'mon whose just going to believe a man who just shows up calling himself Lex Luthor when he says the world is about to end. I'm thinking any Superman hears that every other day.
But also consider, Hoechlin's Superman had to go to Argo in order to have a kid whose superpowers would have ripped his mother apart with one baby kick. It was about removing that power before it could do any harm. I'm assuming Welling's Supes had nowhere to go in order to do the same, so giving up his powers before Lois got pregnant would be the only way to do that.
We also don't know
how he gave those powers up. If it is like Superman 2, then he could get them back again if he felt the threat deserved it.
As for them propping up the women heroes at the expense of the men, IMO, especially with Kate, I'm seeing very little of that in this crossover. This Bruce being bad was just
that universe's Bruce. Not everyone of them is going to be a hero at the end of their story. I'll let Dent fill that in.
Consider that in her own universe, Kate almost reveres her cousin and 'talks' to him constantly. To her he is a Paragon. I guess the only way this Bruce's turnout could be viewed in a good light by all would be if he had been the Batman Who Laughed...
And that actually would have been damn cool!
One thing I take exception to though was Kara's scene with Fox in front of the trophy case. Once she realized what it was you could tell that she was finding it abhorrent. But then I thought about the Fortress almost immediately, and how Supes has his own little museum of the villains
he'd fought and beat.
I really did like when Kate and Kara were about to enter the mansion and Kara called Luke cute, and Kate was just like 'nope nope nope, that's just weird. You made it weird.' That was a cute scene.