Fedor vs Cain is the fight I wish I could see. 2005 Fedor vs 2012 Cain is one for the literal Ages.. I think Cain has the better Wrestling, like from a Pure Standpoint of just Wrestling, I'd give the advantage to Cain.. BUT Fedor would have the Judo & Submissions, also his Top Game was next Level, he was way ahead of his time.. So Grappling Exchanges would be a tough Chess Match for either, especially with both in their Prime. Both would also have Speed, Power, Cardio, Chins... I could easily see it being the Greatest Fight not just in HW History, but in MMA History.
Heart- Fedor
Mind- Cain
PRIDE Ruleset in a Ring- Fedor
UFC Ruleset in a Cage- Cain
Forget every other, this is the ONE we all should've had.