I'm aware that there are different bodytypes, but even so there is no way
a man who's say six foot one should weigh in the 240s, I don't care how stocky or wide he is. Look at Ray Mercer. Very similar build to Sam Peter but was fighting like a beast at 215.
Was Dereck Chisora really a natural 37lbs heavier than Haye or did he just not train as hard? While I agree that heavyweights on the whole have naturally become larger men, there has also been a corresponding decline in hard training resulting in overweight blobs like Arreola and Solis blubbering up the scene.