This might be true, but it is amazing how many belts Hearns won at cruiserweight. IBU,IBO,and WBU I think. And the NABF.
Tommy was one of the best weight jumpers. Duran was good also because he held the weights better than anyone gives him credit for up to 168. Leonard jumped ok, but getting 2 belts in one night with Lalonde was a bit bogus. Delahoya jumped but was not as effective as others.
Doug Fischer wrote a pretty good story on this. http://ringtv.craveonline.com/blog/124583-manny-pacquiao-and-historys-greatest-weight-climbers
If you look at that then Pacquiao hasn't gained that much weight. He was under 18 when he started and now is pretty ripped. RJJ but on the same amount of muscle as he did only differense is that Pacquiaos 40 pounds covers 7 weight classes but Roys 40 cover 5.
What this man said. Jones was once called the 'Incredible expanding man'. He started his career as a string thin 147lbs. Im sure he has to be at least 6ft 4 or so as well. He's now a heavyweight. Although he did get done for PED abuse some years back. Which may explain some of his incredible weight gain.
Its amazing how many boxers have jumped weight over time and then here comes Pac and he gets accused of PED's? :huh If you compare Pac's weight gain to these others, Pac is just behind them. The only diffrence is that when most of these other guys did it, not so many weight classes existed and it seems over exaggerated that Pac is jumping 7+ weight classes. Impressive indeed for everyone who have jumped so much wether they suceeded on getting belts on higher weight classes or not.