Not a GOAT and not an ATG either. Heavyweight is dead ass right now. Talent pool simply won't allow either fighter to get to that status.
No. How could Fury on basis of winning this fight be described as GOAT, it would be first time he had ever defended the title. Likewise AJ, he has flaws which despite him overcoming them still means he is a flawed fighter. Thoughts you say, perhaps it is you who should think, or at least state your opinion on the matter from the outset.
No. The 70s and the 90s produced some ATGs because of how stacked the division was in those days, and the fact that there were so many good fights between the best. The HW division today is slim pickings and so seldom do we even see the best fighting the best. So being the best today doesn't really mean all that much.
Both beat Wlad on the decline, with Joshua especially having a tough fight. Not sure I'd back either against an absolutely prime Wlad, so that'd be one name ahead of them.
But wlad is the heavyweight GOTE of last generation/era the winner of AJ fury is the successor to wlad