I'm not saying Collazo is a great fighter by any means, but Mosley beat him pretty easily. I mean Collazo landed some good shots, but Mosley did what he had to in order to make sure he got the W even if it wasn't a terrific fight. That's 3 really solid wins for Mosley in a row and not just based on who he's beat but how he's done it. Think about it: outslugging Vargas at 154 and contending with De La Hoya at that weight is a tough task (yes, Mosley deserved to lose that fight), but Mosley did well against everybody at junior middle except Winky, who had been there his whole career and was MUCH bigger anyway. Now Mosley strolls back down to WW and calmly takes it to Collazo. I think Mosley beats any WW out there aside from Mayweather (if he comes back down).