I am fairly sure that Silva will destroy Bonnar. But..., this fight could be interesting in that Bonnar will attack. However, Bonnar's aggression will be the end of him.
On a side note; I think it's funny that when absolutely any other fighter moves up in weight, every single person says that's his biggest challenge ever. When Silva moves up, every single person assumes it will be a cakewalk for him?
Were you not there the last time Silva moved up? It was a clownshow.
There were a lot of "Forrest may use his size" comments back then, and you wonder why there aren't any now?