Spin- I think you just talk shit in some distant hope that by repeating that Brock would handle Fedor, that Fedor would magically appear from the rafters at a UFC ppv and challenge Brock in front of everybody.
You seem to know your fighters, but how can you seriously do one of these A would beat B, B would beat C etc. type arguments when Fedor has twice as many victories as Mir has professional fights ( probably 4x as many as Carwin, and even more for Brock)?
Brock has 5 fights. Carwin has 10 fights. You can add all of these guys up and they don't even come close. Styles only make fights when you have opponents that are similar in skill/ experience/ atheltic ability or other intangiables. A superior fighter beats an inferior fighter 95 times out of 100 regardless of style. Chalk up the 5% to a lucky ko, a questionable decision by the judges ala Rua/ Machida, injury and things like that.
In all seriousness, besides Brock being bigger than Fedor what else do you have to launch a decent argument that he would win?
As far as the rest of the UFC goes vs. Fedor, it's not even worth discussing because it's a total fantasy. Mir couldn't beat Fedor at a game of checkers, let alone in an MMA bout.