If he only competed there once. How can it be "his" division ever? He is never going to fight that low ever again and 135 is not "his" best division either.
I'm admittedly not the most knowledgeable guy on this board regarding this, but wasn't he considerably smaller than those he fought at 147 or am I just remembering this wrong?
I kept reading it sporadically because Freddie Roach said it back before Manny loss to Floyd that Manny's best weight was 140 and that he could get knock outs at that level.
Generally your best weight is the lowest weight you can get to without being drained. Roach must have thought that Manny could have made 140 his whole career. 126 was Pacquiaos most dominant weight class. So if you say natural weight is the weight you're best at then 126 was Manny's best weight.
He feels it's the best for his size. I always thought Shane Mosely should have stopped and stayed a bit at 140. I believe that would have been his best class.