You say that but from Carlos Quintana fight 2nd Dec 2006 up to the Pacquiao he never weighed less than 146lbs then fight after Pac he weighed 153 and a half lbs. I just think if you want to be a Welterweight champ or light middleweight champ then let your opponent weigh what he wants as long as he weighs no more than the 147lbs or 154lbs limit.