We all know who flukily won the fight.
The same fighter that was training for a triathlon and the same guy that has been training in MMA for 16 years. You don't just forget how to fight. Diaz boys don't have hobbies, they train, it's what they do (straight from their mouth).
Training camps aren't some miracle to guarantee victory. Bisping said it himself, he got to come in fresh, no bumps or bruises, and ready to go. The rest is history. Fighters have been coming in on short notice and causing upsets since the begining