Some of his WEC wins were ranked top 10. Back then there were many rankings but they appeared on some. The way I see it, when you have one guy going 21-5 at LW and the other 11-3-1, you gotta give Benson the +1. When both guys have 3 title defenses, it's even, but then you consider Ben winning and defending the WEC belt, that's another +1. Both have have a similar amount of top 10 wins so that's even. And beating guys like Melendez, Diaz, Edgar 2x, Cerrone 2x, Thompson is certainly a better resume of top LW'a than what BJ did, so that's another +1. Not to knock BJs comp, but come on, Ben's wins are stronger. He's got +3 here.
Khabib didn't beat that many great LW's, RDA, Poirier, Gaethje are his best wins and you got Conor, Edson and Johnson as the next. But to be honest, BJ didn't beat many great LWs. I have Gomi in there, but beside that guys like Stevenson, Pulver in 2006 weren't that great. Florian and Sherk barely had a career at LW. His entire resume honestly is pretty average. Khabib certainly beat more elite level LWs. And again, completely dominant and never lost.
About the so called robbery, you can't really take a close fight like that and spin it in BJs favor and call it a win. Even if BJ got the nod or a draw, Edgar's win the next fight was far more convincing. You basically have one close fight and one where Edgar clearly won. One way or the other he's still ahead H2H. But yah, Edgar did win the first fight, you cant really change the result. Best you can is call is a close one. Edgar has less top 10 wins, but you gotta consider that he's got two wins over BJ, Maynard, Sherk, Franca, Fisher and Griffin. That resume is certainly on par with Penn, take into consideration the H2H and he's ahead IMO.