Velasquez has only two successful title defenses under his belt. He has a long way to go in order to catch up with Anderson Silva or Georges St-Pierre, at least in terms of numbers. But other than Ronda Rousey, who can match the gap Cain has created between champion and the pack of contenders? In the long run, maybe someone will step up. In the short run, a lot of big guys are going to take a fall.