Bisping doesnt have natural skills. He's not the fastest and he's not the strongest. But it's his strategy going in which makes the difference. If he can work around allowing Vitor to land a big shot, he will win the fight. If he can make it a grappling exchange or even take it to the ground in each round, I think Bisping will convincingly win. His danger is on the feet because he is quite succeptible to getting caught and Vitor will definently put him away if he gets the same moments Stann got.