Different times...cannot compare the two....Rocky got out in his prime....Had pressure coming at him from both ends to retire constantly (wife and mother). Hard to keep winning when those close to you oppose everything you're about. Had Rocky had the training of boxers during Ali's time and Ali had the training of Rocky's time, who knows, we may never have heard of either of them or the both could have still ruled their respective era's. Cannot compare the two. There was no rope-a-dope back then. and the gloves were definitely light years behind.