I traded my copy of MvC3 in.
Mainly because I did everyone you can possibly do offline, and online was boring since I didn't feel spending hours memorizing twitchy combos and infinites and playing a game of who hits who first. With no DLC at all lately, there's little to nothing I want to do with it.
Plus SMvC3 is pretty much inevitable so I'll wait for that.
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Brawl is like ZSS' breasts. Well rounded for casual players.
http://i53.tinypic.com/28sxzzr.jpg