I must admit I play about an hour of the NCAA 2011 Demo every day. I'm buying it on 360 to play with my friends online, but I've been playing the Demo on PS3.
EA put out a great article recently about the improvements they have made since the Demo was completed. They stated they really do put an entire month more of work into the game to get it ready for final release. The Demo was completed on 5/1 and the Game was completed on 6/1 encompassing as many fixes as they could make in the extra 30 days they had.
Big things that I think make this game incredible are the blocking schemes. I've never seen a football game that punches holes in Defensive Lines like this game does, and encompasses the strategy of hitting a hole with your HB, and then following your blockes. Want to bounce it outside? See your WR try to hold the edge so your HB can turn it up field. Until you see it, you can't believe how realistic it is. Really a work of art that makes this game exciting to play. Add to that realistic playbook for every team and the ability to now run a hurry up offense and still select plays, and you have an unbeatable combination that will actually feel like the real thing.
My only criticism early on other then the lame commentary has been the inability of the DL to put pressure on a computer QB. This has supposedly been fixed, but if the game doesn't get it right you always have the AI slides to assist make it more realistic.
My id online is backusduo also, so fee free to look me up on 360.