Silva did get knocked by one of three best heavyweights in the world.
It has been rumored forever that either Chuck, or more likely, Dana, did not want for this fight to happen. Nothing good really comes out of hit for him. On one hand, if Chuck wins, most American fans will not comprehend how big of a win this was because it was not Tito or Randy. If Chuck loses, he lost to a fighter form another organization that many people have not even heard of. And thirdly, and possibly the most important factor, is it exposes more Americans to another, (and at the time better) organization.
Chuck is a very good fighter, but has been fed some pretty easy fights for a title holder. (No disrespect to Tito or Babalu, just the truth) He matches up very well with Randy and this can somewhat explain his success against him.
Quinton has a very good chance of winning this. He already did out strike Chuck in their first meeting, regardless of what excuses Chuck had. But, Quinton is getting older and could be another fighter that Chuck will beat, although the fighter was no where near his prime. The Iceman is disgusting, but I don't think he can beat the likes of Silva, Shogun, or Arona. Not to mention his talk of wanting to face CroCop or Fedor is just downright stupid.