to be honest comparing the caliber in these lists i don't think the quality is too far apart
Exactly. I don't even like Bisping, and I agree that the British fans overrate him, but no more than Brazilian fans overrate Vitor.
The difference being that at least Bisping is consistent. You don't know what the hell you're going to get when Belfort steps in there and if his opponent doesn't roll over and die in the first round after getting punched in the back of the head ten times, he loses every time out.
Neither guy has a snowball's chance in hell vs Anderson, so there's really no point to this 'title eliminator.'