I'm in love with this game. It is kinda lacking though for casual fans of the series due to the single player content being incomplete. They are adding it as free DLC in March but they definitely released the game incomplete so that competition players could do multiplayer.
That stuff being said, this game is awesome. Execution hurdles have been reduced in favor of promoting the "chess match" between players rather than figuring out how to do 902389 hit combos. Some characters (Zangief, Birdie) are pretty destructive with only like 1 combo at their disposal. I use Zangief and most of my matches go without using any combos at all (aside from jab into another jab).
Graphics are improved from Street Fighter IV, but somehow it uses less resources than SFIV. Its a great game if you have a low to mild interest in fighting games and want to see if you can compete. There is a learning curve for some of the combos, but the introduction and tutorials are made with fighting game beginners in mind.