hahah i know this may seem ignorant but oscar and roy are basically the same height and almost the same size. especially since oscars head is so big. so if oscar really wanted to move up in weight when he was younger of course he could have. he just stayed at the lower weights to dominate them. the lower weights also had more p4p competition too. light heavy division never really had that much p4p competition. not even as much as 160 or 168. but i give rjj more props for moving up higher and higher to dominate all the bigger guys and obviously the HW crown. at one point rjj was so pissed that oscar had the better competition at the lower weight classes that he was going to drain and starve himself to fight Tito Trinidad.