The near unanimity of opinion on how Brock would crush Silva is kind of surprising to me. I agree that Brock would win too, but I'm surprised hardly anyone thinks Silva even has a fair chance and this is a ridiculous fight to even contemplate.
Geez people, first of all, Silva gives up not 80, but 60 lbs to Brock if that. Silva walks around at 220 and Brock at 280. Maybe some of that 220 is fat but not much, because he looked way more cut at 205 than Brock at 265. So I'm guessing if Silva packed on some muscle and for this fight, he would be giving up 50 lbs of muscle to Brock.
Fedor has fought at least half a dozen fights with that much or more weight difference, and he's dominated them all.
Also Brock's manhandling of Mir and Couture doesn't mean he'd do the same to Silva, those guys are dinosaurs with their technique compared to Anderson.
I think Lesnar would eventually barrel Silva down just because you can't sprawl against 280 pounds of Rhino charge, and he can only dodge for so long (something I think Machida might have better success at). And his bottom game is certainly not better than Mir.
But at the same time, Silva has a VERY good chance of tooling Lesnar on the feet. Lesnar had a LOT of trouble taking down Couture and defending his takedowns, and Couture's SMALLER than Anderson. Just because Murr and Herring bad terrible TDD doesn't mean Anderson does, and it's still plausible for him to KO Lesnar quite easily while avoiding the takedown. People seem to think Lesnar's size somehow gives him a magical impenetrable chin that can only be broken by other giants. It doesn't work like that, chin doesn't necessarily increase proportionally with size, ask Zuluzinho, Arlovski etc. Anderson could very well tag Lesnar and destroy him. Because 220 lbs of weight thrown with amazing technique hits a lot harder than even 300 thrown with crap technique .. when you break it down to the physics of it, people seem to be overestimating how much difference the weight makes.