This fight doesn't get remembered accurately over time. Most fans are stupid and don't know what they watch or haven't even seen the fight and just go off the result. When Penn was on point and in shape, he was so insanely good, but when he wasn't...he'd often gas and look for a way out or lose. The Nick Diaz fight for Penn was the beginning of the end of his career, but Penn vs Diaz...round 1, Penn boxed Nick's ears off and took him down and won the grappling exchanges...he just gassed after round 1 and got worked rounds 2 and 3. Even Penn vs Fitch, I remember Penn dominating round 1 and then slowing down, I think he won round 2 but gassed out completely round 3 and lost a 10-8 as a draw. But when Penn was on, like vs Diego, Gomi, Florian, Sherk etc where he didn't fatigue so easily...dude was an all time great talent and dominant monster. And even in his loss to Nick or draw to Fitch, you saw despite him being two divisions smaller in size, his skill ceiling was higher than theirs and he just wasn't taking training seriously enough anymore.