I do not think he is the best in the division or likely to become the best in the division. I think he has a style that will tear through 80% of heavies but lose badly to the other 20%. cant see him beating anybody fleet-footed. i'm not saying he has Foreman power or boxing IQ, but stylistically I think he is like Foreman in terms of who he would win against (come forward fighters, guys with weak chins esp if they're slow starters, other punchers) and who he would lose against. can't pick him against Usyk considering Usyk beat him up in semi-pro. think fury beats him easily. honestly still favor joshua and wilder too. i think he could beat most of the rest of the division though.
I quite like Joe. I think his boxing IQ gets underrated by many. He constantly fights at a different tempo which will always catch his opponents off guard. For e.g he'll pop out a slow jab for 30 seconds but then all of a sudden he'll get fast with it and the opponents have no answer for it. His sheer size, cardio and pressure will fold a lot of top HWs. However I don't think he'll ever become the king of the division.