I would rather they just do it at 147 as those who don't want to give Pacquaio any credit for anything will seize on this.

That and some will just genuinely think its not as meaningful at 145. Which is fine although I don't totally agree.

But SweetPea nailed it IMO. Of course its a huge accomplishment. And there's context too, circumstances, Cotto isn't a huge welter, he's really a tweener, too big for 140, not a huge welter. If Margarito or Williams, for example, were forced to make 145 I think it would be a bigger deal as they are really 154 pounders fighting at welterweights. Or at least were fighting there in PWill's case.