I would also have to say Bisping. He was above and better than every fighter in the house, and it showed.
Runners up are Luke Cummo because he was so weird and unorthodox. I didn't expect him to be so good. He was also a big underdog and made it to the finals. He's since gotten a lot better, and he had a pretty good back and forth fight with Goulet, but didn't pull out the victory.