I thought it was pretty close and Hamill would have been alot smarter to push his advantage on the ground alot more. It seemed like he expected Bisping to be completely suprised by the fact that he had a decent striking game and just quit. Also when he did go for his takedowns, if it was blocked it seemed like he wouldn't really try anything else. I would say that Hamill literally lost the fight. He had the tools to win it but didn't really seem to want to use them and let it go to decision. Thereby losing the fight.