Any FIFA game is too tacky and focused more on how David Beckham's hair swings when he's taking a free kick - as opposed to having a decent engine to run a decent football game.
Pro Evo on the other hand - allows for a lot more flex in the game play - things happen in Pro Evo which you can't predict - in a good way. As opposed to the classic FIFA games of old - where you sprint down the wing, cross the ball in and score with an overhead kick, 9 times out of 10 - Ah, Fifa 2001. Good times.
FIFA, in my opinion, went down hill when they took out the indoor football pitch.