The only way i see Pierre winning is if he can take Silva down multiple times like with Alves and try some G&P or submissions. Silva is at his most dangerous on his feet of course. If GSP can take him down and maintain control he could win. Although I don't see Silva staying at middleweight too long even if Pierre moved up. There is no one left for Silva to fight at middleweight. What is he gonna do? Fight Pierre 5 times in a row. That's pretty much all he could do at middleweight with Pierre if he stayed.
Silva will get his first loss in light-heavyweight. The light-heavyweight division is without a doubt the most stacked of all. Almost every fighter there is a former champ. I see Silva getting a knockout loss in light-heavyweight. I don't care what you say. Light-heavyweight is just impossible to go undefeated through. I wanna see Silva vs. Machida. Now that would be a great fight.