To whoever says you need to win challenges in order to be a good Survivor player - WTF?

Tina? (Yes, I know she DID win, but...how often? And compared to Colby? AND she didn't win the F3 IC, so...)
Sandra?
Vecepia?

Cirie didn't need to win challenges because as far as she knew it was a final 3. Challenges aren't important. If they were, do you think she'd have kept Parvati and Amanda around and not sided with Natalie, Alexis & Erik? Come on.