UFC 155: Will the UFC Heavyweight Division Ever Have a Dominant Champion?

When Cain Velasquez's hand was raised at UFC 155, it marked the seventeenth time that the heavyweight belt has changed hands since its inception at UFC 12. For five full rounds, Velasquez dominated Junior dos Santos, constantly taking him down and lighting him up with combinations in order to regain mixed martial arts' most coveted piece of hardware.  But as we've seen over the years, keeping the belt is a lot harder than getting it. Unlike some of the other weight classes, the heavyweight di...