No way the Avengers have a shot in Hell of taking this even with lots of one-sided prep. You could probably bring the entire X-Men in addition and they'd still lose. Horribly, at that. The only chance they'd have is with Xavier but I don't buy all the hype perpetuated on this board that he can mind control pretty much everyone and anything even aliens, amazons, etc...
Hell, Superman could easily one-shot half that Avenger's team all by himself.