I am going to pick Vitor.
Now normally I pick against Bisping out of spite or just dislike of his fighting style, but I think his poor early defense and Vitor's early rush will finish this fight. When Bisping fought Kang he was nearly finished, but Kang, like a freshmen at prom, couldn't last 2 minutes. My honest thoughts are Vitor via KO/TKO because Bisping seems to like to take a shot or two before putting his hands up. I think when Bisping gets hit hard and faster than he has ever been in his life that it will all be over.