It's possible that Usyk can go on to become a genuine P4P ATG. Joshua will always be up for debate because he has on paper achieved a great deal....but doesn't pass the eye test in terms of wether he would have stood up head to head against the best heavyweights of all time. It's hard for me to imagine him being super competitve in the prime Klitschko era. Nor do I believe he's anywhere near great in the Tyson/Holyfield/Lewis era either. Could he compete with Ali/Frasier/Foreman? Unlikely. Definitely up for debate though.
Comment