Fifa 12 sucks. Oh sorry that wasn't what you asked.
The skill moves I think are identical for the most part? There might be some new moves. Most of the controls are identical. With the exception of defense. They removed the ability to hold the "B button" to press with a second defender. Now you have to hit right bumper. The defender only jockeys, he never tries to attack. Playing defense is really hard in the new version. As if it wasn't already easy enough to score... I got routed like 9-0 in a couple games last night. I never, never, ever lost that bad in Fifa 11 or Fifa 10.