You are either underestimating Sonnen's size, strength, and/or wrestling, or overestimating GSP's. Sonnen's success on the feet vs. Anderson was weird. I'm not sure if it was because how unorthodox it was or if Silva just didn't respect it, but I don't see GSP being able to land the same shots, and if he does they won't be as effective as GSP doesn't have much power. Besides natural weight GSP will also be giving up 4 inches in height.
---------- Post added May-1st-2011 at 05:26 PM ----------
I think if they offered him the fight at 178, he'd take it. That is probably the best situation for everyone assuming that wouldn't be a killer weight cut for Silva. If it would be then I don't want to see it.