I've got motion plus but couldn't see how it was affecting/improving the game. Unless I missed something, the game doesn't make massive use of gestures anyway.
The graphics are a little grainy and the framerate is questionable but the game itself is actually fairly good. Nice, arcade-style five-a-side football with decent controls. It's not going to set the world on fire but it's better than a lot of the stuff out there, it's certainly worth checking out.