I think he was great for a few short years, but unfortunately the Heavyweight división was not great when he was in his prime. I agree he beat a few good fighters very handily, but there was nobody great for him to face until he was on the decline. I think Ali in his prime would have handled Tyson, but Tyson was certainly capable of winning if he could get inside in Ali and land one of his haymakers. I think it would have been tough for Tyson to get that opportunity with how skilled and long Ali was.