Shane Mosley is a good example. He knocked everyone out at 135, but his power wasn't as effective after he moved to 147 and 154 even though he had some decent KO's.
It's not all about power. Fighters may change tactics as they move up through the weights, which means they're less attacking and land less. They may be a Hatton type who relies on strength to tire and then finish an opponent, but they're unable to tire bigger opponents Many more examples.... Bit of a simplistic question...
Power never diminishes moving up, in an absolute sense. It increases by a little bit, but it affects bigger opponenets to a lesser degree.
Not really such a good example IMO. The standard of fighter Shane fought was considerably better at 147 and 154 than it was at 135, which had as much to do with it as the weight. The standard of opposition he beat at lightweight was very poor.
Pacquiao. He had quite a few points wins at flyweight early in his career, and looks every bit as powerful at superfeather (and light though it was only one fight) as he did at superbantam.
Mayorga gave Tito Free several free shots. Cherifi was KOd several times before Tito and several times after Tito. And Tito was totally ineffective, power-wise against Roy. So these three hardly answer my question. And those are the only three fights he's had since his wrapping technique was 'exposed.' Oops. Forgot Winky. But that fight doesn't alter my case.
I agree with every thing you said except for your logic reguard Ricky Hatton...Hatto fought at 140 & 147 at the same weight which is roughly 152... What is the difference...? Are you saying that he looks better when he dehydrates himself? If so then that has nothing to do with the weight...only the preparation prior to fighting... Can you answer that?
Yes, I can answer that. Watch his fights against Tszyu and Malignaggi, then watch his fights against Collazo and Mayweather. Rather than get into an argument about dehydration and weight, just look at the evidence. His body is more suited to 140, the additional weight he put on to have enough bulk to cope at 147 was actually detrimental to his power and explosiveness.
I disagree. Look at his fights with David Estrada and Cruz at 147. He hurt Estrada to the body but that was it. He beat alot better guys and 135 and destroyed them at that weight then these 2.