Boxing requires a really unique skillset and mentality that is unlike those other sports.

People become fighters because they WANT to fight, they are not interested in playing football.

In terms of athleticism, athleticism is one of the LEAST important aspects of HW boxing.

Athletic boxers get knocked out more often/earlier and pose fewer problems statistically than slightly less athletic boxers that is a fact.

This myth was constructed by the American boxing community to save face after they were booted out of boxing.

This myth has been busted many times.

Boxing eras (5) The worst heavyweight era of all time! -OR- Americans play Basketball now! | Box statistics, analysis of boxing history records, stats of boxing eras