When looking at the top 10 pound for pound you have to look at longevity, who they beat, how dominat they were at a weight class, how successful they were as champions, how successful they were when moving up in weight, how much weight they moved up and how good their acutaul talents were when it came down to it and records all depends on their eras some were weak and some were strong all depends on how people think of the time when that fighter was fighting i guess you could say