after messing around for an hour or so, I gotta say it's a lot better than MK9 but it's still pretty ass considering all the hype. Also I really wish they would change Batman's fighting stance; looks like such a jackass. I still haven't really gotten used to canceling normals into specials though, do you just special cancel as fast as you can or do you have to link it?
One thing that is pretty fucking awesome and thoughtful of them is that they put each character's full frame data in their move list when you pause the game.