while what you are saying has truth to it.....I pay very close attention to how fighters look at the weigh in. I dont see a huge size difference. GGG has a deeper chest but thats about it. he may have more upper body strength but again, not sure. Kell's body looks really good. Doesnt look like he has weight out of place or simply tried to put on weight. he looks very natural.
on the other hand, GGG looked drained. could he have stamina issues going into the later rounds? I think its a huge possibility, meanwhile, Kell is a big welterweight who probably feels really comfortable without having to cut weight because he is already a muscular guy. stamina could be in his favor. the difference a lot of times in weight loss/gain is the fighter dropping weight can feel and be affected by shots much more while the guy gaining the weight or not having to drop as much....can deal with the punches better.
not saying Kell is Manny but whenever Manny jumped weight, I paid really close attention to his body, and while you are pretty much guessing as the way a body looks sometimes is moot....I never once felt like Manny seemed out of place. Kell may not look like a MW to some, but he sure as hell doesnt look out of place like another 147lber may.
edit: oh yeah, and from what I have seen, there isnt a huge disparity in height or reach.....they both are very close in those stats.
