If anything Fedor is closer to Mike Tyson (without the level of fame on controversy)...
Even this comparison fails on so many levels. Tyson went out with a bang. He kept fighting the best and kept getting his ass beat. He never ducked anyone. The Holyfield fight was set, but then he ended up in jail.
Fedor didn't just duck young up and coming fighters, he even avoided top ranked fighters that would old than him. There's really no one in boxing or mma to compare him to. He's in a category all by himself. Maybe Floyed Mayweather would be close, as he's ducking pac, but apart from that, Mayweather has fought the best. Fedor has fought cans and hasbeens for what 7 years?
Fedor really has a unique legacy. He was once great. The mma media puffed him up about 5-7 years longer than he should have been.