The question you need to be asking is whether he has the mind for it. Anyone can take a decent shot to the chin and punch hard(eg. Leben, Jardine). Sure he may be physically gifted. However, as we have seen it is not physical prowess that wins fights alone(Penn vs. Sherk, Franklin vs. Silva, Fedor vs. anybody). The greatest fighters are the smart ones like GSP and Silva and Penn and obviously Fedor, Brock will only be able to reach his potential if his mind is focused and alert and if he sticks to solid gameplans. Otherwise he'll rack up loss after loss to smarter fighters, which is why the Couture fight will be amazing to watch, we get to see if Brock is smart enough to win or if he is just another greedy wannabe who happens to be really fit and big. My money right now lays on Couture not because of Brock's lack of experience or heart, but because Randy finds ways to win and Brock is frankly too immature to fight to his potential.