Chisora has similar punch stat numbers as Frazier he most certainly would not be “gassing” for air in 3 rounds so it seems like 250lbs+ suits him and many fighters well, they’ve just got the frame to carry the extra weight. Let’s make it clear I think Liston beats Chisora before we proceed but size / strength isn’t the only thing I agree I believe Louis beats nearly everyone and that Toney could beat Holyfield though it is one of the most important things depending on your style, very physical fighters like Foreman will require it to be successful where as someone not reliant on that sort of thing like Tyson could flourish at HW today.