Yeah Edgar beat Penn twice. Even Superman had his kryptonite. Penn holds two wins over Matt Hughes but I would still rank Hughes higher on the alltime WW list. The exclamation point for Penn at lightweight is his resume, longevity and his performance. Due to the evolution of the sport, Edgar may have faced slightly stiffer competition during his run. I'm not going to hold that against Penn. BJ pretty much fought only the best of his era and obliterated most of them. Every title fight Frankie has had has been a struggle where his heart has willed him to victory, draw or narrow defeat. Finishes and dominate performances I believe are a premium criteria in this discussion. I think that's what Penn edges Edgar out with.