On him quitting. Your in the cage you don't have a answer for whats coming you've taken damage. So to concede in honorable fashion refrain from more abuse totals to the body for no gain isn't to crazy in the long run. They game planned BJ perfectly pumped his arms up to slow him down put anough abuse on him were he would know he didn't have the power to knock GSP out. Plus BJ new he wasn't going to out wrestle GSP with his low risk smothering style.
I'm not saying I'm a fan of it, but understand why. As the saying went retreat today to win the war another day as it's only a battle today.