I think that's one of my little quibbles with this Avengers vs Aliens one... the two battling parties don't really feel specific enough to one another in the way that Cap/PotA or even Predator/Wolverine do.
I would have thought that Aliens would have led off with a Marvel crossover pitting them against either the Guardians of the Galaxy or Captain Marvel (I know she's in the Avengers one we're getting, but something with her standalone as more of a Ripley-esque final girl in space [pretty sure this Avengers one is on Earth] would feel a bit more thematically appropriate than the Avengers on the whole).