Uhhhh. you realize size is part of wrestling and grappling prowess right? that's like me saying Fighter A would be a better striker than Fighter B if we ignore that Fighter B has insane power in his strikes.Performances against RDA are irrelevant, because Usman enjoyed a massive size advantage while Colby only had a minor one. Amateur wrestling careers outside of MMA mean nothing, they're not wrestling on a mat. Only way to determine who's the better wrestler is to shrink Usman to Colby's size and make them wrestle.
You also just seem very unfamiliar with what Usman accomplished on the mats compared to what Colby did....
Which again, part of wrestling. Would you ignore a striker's durability when comparing them head to head with another striker? Nope, because that would be head up your ass stupid.Size is a factor, but if you win due to a significant size advantage, you're not the better wrestler. More like a better weight cutter.