I wonder what people on the UMVC3 board will vote for. Hmm... --- http://i.imgur.com/5Vagu.jpg | http://i.imgur.com/cvtCi.jpg | http://i.imgur.com/g3xnj.jpg | http://i.imgur.com/57nNp.jpg | http://i.imgur.com/gvpwv.jpg
I'm only saying MvC2 because I'm played that game for so long. I even go back to it this day. UMvC3 has a lot going for it though with character variety, ease of access and a level of depth to it as well.
I guess the best way to put it IMO would be: MvC2, characters were "broken", UMvC3 mechanics are broken.