I think it is a worthwhile game, especially if you creat your own team and build them up. I've fumbled the CPU plenty and can hold them most of the time on defense, just don't play it blitz style, always rushing the QB and you'll be successful. Styles I think are fun, but the game takes time to get some skills. As for difficulty, there is a CPU assist option that can be turned on or off, but for me playing with a newly created team, there was plenty of challenge as my guys were horrid at most anything. Then it comes down to skill. I think of it as NFL blitz with a little more play calling and strategy like madden. I definately like the playbooks. Option passes, QB runs, direct RB snaps, reverses, RB pass plays, a lot more trick plays than I've seen in most games.