BJ, and although it is sounds crazy to say because of all he accomplished, I don't think he realized his potential. I think the sport changed, and BJ didn't adjust to the changes, which was evident in his Edgar fights. When talking about the greatest of all time, you have to take into account the different rules,and eras (and the culture of what "winning" a fight meant in that era) that guys fought in. Benson and Edgar would have struggled in the early UFC and in Pride/K-1. Benson and Edgar are underrated these days though, they are all time greats.