Cain may have great cardio but the guy lacks the finishing touch. He doesn't have KO power nor the submission ability to do to an opponent. If he couldn't finish a JDS in 5 rounds how is he going to do any better to a fresh Overeem? And unlike JDS that Overeem is not a 1-dimensional striker that can't even check leg kicks. The guy has a good submission game and can grapple. Cain better bring it!