No I am not attributing his wins because of his size, I am not disputing he is a great highly skilled champion. But this is a P4P list, every1 on this list is highly skilled. Every1 is in the upper tier of fighters. The way i look at pound for pound is if these fighers were all the same, weight, seize who would win. No size advantage, no reach advantage none of that.
Yes that could be said about BJ, but I dont put BJ in my pound for pound rankings currently.
But i would have to dispute your statement about GSP, outside of Shields/Diaz who has GSP ever fought that was equal or bigger than him on fight nite after the re hydration? or even in just reg walk around weight? Serra, Hardy, Condit, those guys are pretty small and lean.
Now, I'm not bashing GSP he has absolutely dominated his competition and is a worthy champ. I'm Canadian and have seen every ufc in mtl and have cheered for GSP live. I have partied with GSP before he was champ and after and i still am friends with some in his circle. But when comparing champions in a p4p list, I gotta look at the competition they have faced. Outside of Diaz and Shields what other guys have GSP beaten that have went on to dominate other weight classes or promotions or even been solid num1 contenders the whole time. Koscheck, hardy, alves, serra after they loss, they never had any other meaningful wins or anything. Which kinda strike me as maybe they really weren't as good as they were hyped up to be. There is Fitch with 1 win in last 5 fights.
So that is my basis for putting GSP behind Anderson and Silva. He's still top 5 in my p4p but its hard for me to put him ahead of Silva, maybe a better argument for being above Aldo, I'll leave that to you guys.