How is Holy more durable? He was knocked out himself by a blown up middleweight. Liston didn’t “quit” or get knocked out till he was past it. Won the title as an older guy because he was avoided. Was living the good life not training as hard and partying. Like most champs he lost his fire after winning. Holy to his credit did not. But prime for prime Liston was better in every way but speed and PED use.