Again, this has just been one of thoughs "What if's" I've been thinking about.
I get what you're saying, but I think that Fedor would be just as dominant, personally.
I think a lot of LHWs would give him trouble actually. The talent pool is a whole lot deeper at LHW than HW.
I always wanted to see Shogun and Fedor fight when they were both in PRIDE and Shogun had basically killed everyone at 205.
The talent pool's deeper, but Fedor's faced stronger opponents, with excellent ground games and striking, only to demolish them. At LHW he'd be even more of a juggernaut IMO.