Why don’t 300 lb +Heavyweight boxers KO their opponents easy ?

[WillieWild114]

They are bigger than most fighters in their division however most fighters in that weight range don’t have the highest KO percentage howcome?

[famicommander]

Force = mass x acceleration

At some point the mass hinders the acceleration to the point where it becomes a hindrance

[YGriffith]

I've fought two guys that were 300lbs or more before, but the hardest i've been hit was by a guy that weighed 198lbs.

Their punches hurt, they were heavy and you will feel the weight, but they weren't explosive like some of the lighter/less heavy guys.