I think it's a little unfair to say that Breloom@Fight Gem is not a good idea because it is shown (what I agree with), but praise for instance LO Scizor for being able to set up on a bad switch predicting banded set... I don't really see the logic.
Whatever, if it's about chosing a fancy set, obviously Starmie won't win but well... I didn't know this was the subject. I'm not really familiar with the process of this subject though..