I don't think it's fair to put Rizzo on the list. Since when has he ever been overrated? He was hyped when he was good and able to compete with the best at that time, but as he started to drift away from the top, peoples' expectation of him began to come down also. You could make the same argument for Ken. Not very many people still seriously believes any of these guys can compete with the best of today. Ken Shamrock is the only guy I know of that overrates Ken Shamrock. Or show me some evidence on either and I'll shut up.
Gomi being on the list is just silly. I believe Randy is a bit overrated myself, but he's still far from being a top 5 most overrated figter.