well Ken's prime was his pancrase years. And he obviously wasted a number of his best years in the WWF. That being said Ken never seemed to evolve w/ the sport as it changed over the years, and seemed to have stamina issues sometimes. Ken in his day was Fedor like. Good power, good hand speed, not real technical w/his striking and very solid on the ground. Ken just didn't do enough in his career for me to call him the greatest. To me at the moment its Fedor b/c of the names on his list, the ability to battle back and the variety of way he has won. I think Shogun and GSP have the all around skill and athleticism to go down as the best of all time.