Talk about an ego. “Rocky Marciano had such dense bones he was the toughest man of his era and yet I knocked him out at a golf course” we get it you’ve been around Djanders...
No doubt true, but (although my post was intended to be a joke) remember as well that Evander had some very good trainers and advice. I doubt his nearest competitors had the same quality of experts advising them, so it's hard to tell whether we can credit Evander's progress to better genes than the field.
Kallie Knoetze had the classic Boerish hams found nowhere else on the planet. Almost an unfair gift in the ring.
Google says that bone density in men and varies by 4.5 to 16.5 percent and that black Americans tend to have the higher densities. Google also says that athletes have higher bone densities. I see no evidence that Marciano had greater bone density than other boxers.