Yeh Rev, I haven't played 10 online yet, but with Fifa 09, basically online you played Utd or Barca about 80% of the time, with about 15% of the time being other assorted champions league teams and about 5% being other teams.
The funny thing was, at the peak of our run last year with Live Season on, Villa were amazing on the game. I honestly think they were one of the best teams in the game so you could beat teams like United very regularly.