I think if he wins he'll be back up to 30 stone and on the bugle b4 you can say cheeseburger and back to being the world's worst keyboard warrior , he can't handle pressure at all.
Really good thread, I think there is a rematch clause in effect for the Wilder Fight, so if he loses - he'll probably be a bit down about it... but he'll be focusing on the rematch to get back again. If he wins, he's brain might explode from over confidence and grandeur, the space-time continuum might even break. And then he might go into the rematch and lose because he is over confident and THEN he goes back to 30 stone.
Unfortunately Knowing Fury I think if he wins he'll pull the same stunt he did after beating Wlad and sit out again gloating about his win to anybody that will listen. If he loses Fury most likely will bring Peter back to his corner and live and train like a monk to win the rematch and then after the rematch commence to doing what he did after beating Wlad.
If Fury wins I wouldn't be surprised if he goes on another drinking and eating binge and ducks the rematch. He's done it before and he said multiple times he regrets nothing at all.
Best thing would be a clear win but one that looks possibly reversible so that he feels the need to proof something in a rematch.