All the great ones thought that way. Some expressed it more than others . From outright obnoxious bravado , like Ali, the Menace of Tyson or Foreman, or the cool control of Arguello.
As a way past prime 37 year old he gave Lennox Lewis hell in the rematch. The next year Lewis steamrollered as good a crop of heavies as any of these guys ever fought. Lennox was 34 but he was still fairly close to his prime, as a late developer. I'd favour that version of Lennox over all these guys. So if 37 year old shopworn Holy can take him to the wire, 28, 29 year old Evander can beat him. Therefore ... Except at some point he'd have a Bert Cooper night where he performed within himself and be beaten by a lesser fighter who would then lose to someone Holy had beaten. But, in a one-off, he has the tools to beat them all.
Tougher for me to swallow. Joe was all around great and was a harder puncher...and he was the master of disaster when it came to combinations.