I bought it.. soo far, I have found 2 things...
1. It is a VERY involved game, unlike any other fighting game I have ever played, there are SO many things you need to do just to win a fight, that at times it is kind of ridiculous... along the same lines, I am currently doing a career mode, and you can only be a maximum of 30 on any one attribute to start with... And you really have to map out how you want to train before you start, because if you try to do it as you go along, you will mess up and not have what it takes to win a match..
2. It is certainly the most realistic fighting game I have EVER played... for example if you are fighting against Chuck Liddell, and you try and trade with him, no matter who you are, or how good you are at pressing the buttons fast, you will get knocked out time and time again. You have to try strategies for these fights, like punch and move, and then take down and try to ground and pound...
All in all, it is a terrific game for the MMA/video game junkie that was the time and patience to invest in the game and learn the strategies and moves to be successful, but for the average gamer who likes the historical fighting games it will leave you frustrated and confused....