I think the version of Byrd who defeated Holyfield and Vitali comfortably outboxes and doesn't lose to Andy Ruiz Jr.
Maybe but Byrd's kryptonite is hard hitting athletic superheavyweights. Joshua would give him the Wlad Klitschko treatment
People seem to forget that he got comfortly outboxed by an injured Vitali. He won because big Vit couldn't take the pain anymore and quit on his stool, not because he was doing so well technically.