I figured, and actually Tony would have figured, too, and I also thought, obviously there's somewhere to put all of the prisoners, too, because you can't just leave them behind because the world is ending. So maybe one of the ships is like...the Negative Zone basically, just full of Things That Need To Be Contained, so they would be Bruce and all of the Really Bad Superpowered Evils. And then when shit breaks down they are just the Evil Dude Island, so maybe that's where the Contessa is too, and then it's all like...I keep wanting to say Blade Runner but probably more like that prison in the third(?) Alien movie.
ANYWAY even if Hulk isn't the King Of the Shitzone, that should still become a place to play in, while Bruce does other stuff.