Extra weight was the reason AJ was slow against Andy Ruiz and lost via TKO.
No, because he tried to fight a close combat with pure in-boxer/in-fighter breed while he has the advantage of reach/height and speed.
If AJ gains weight for power, the fight will end with UD but with even more points advantage by Usyk. Maybe doing opposite will be the key. Maybe loosing weight and have it identical to Usyk will do the trick. Speed vs Speed.
It's not that AJ is slower than Usyk, it's just he cannot fight a southpaw boxer the same way as he fights an orthodox boxer. The tempo, the feel, the angle, everything is so messed up. He cannot get used to fighting a southpaw boxer in just a few months, so better gamble would be going for in-fight against Usyk.
Your sentence sounds like "hey buddy, just mimic the Carlsen/Ronaldo strategy and be a great chess/soccer player." At such a high level, where every nuance matters, this is simply unrealistic. Joshua has a different physical condition than Fury and he cannot transform into him.
It was a deeply calculated idea from a former "boxing manager" player who wasted countless hours playing, lol.
Even in the first match, against the background of Usik, he looked like a very slow boxer, what will happen if he gains extra weight? I think that on the contrary, he should lose weight a little and focus on increasing speed - perhaps this will allow him to realize his advantage in strength. Otherwise, Usyk again simply outboxes him in smart boxing.
Again, this is the view of ordinary boxing fan, "the speed," as if AJ was slower. No matter how much weight AJ loses in these few months, his punch won't land if he cannot deal with southpaw style. Why not just rush in-fight with his bigger and more powerful build?