I think you're getting a bit carried away by Usyk's great win over a very good champion. But Ali would be a totally different proposition. Usyk looked pretty fast beside AJ, but Ali was very much faster, both hands and feet. The only current HW who would pose any problems for Ali would be Fury, on account of his size. And he too would lose a wide points decision to Ali.
Usyk beats AJ. Now he can beat one of the greatest h2h heavyweight nightmares?? Jesus, post-fight hype for Usyk is at a all time high right now. I do agree Usyk certainly can cause Ali problems. But my lord some people are saying total domination?? So Anthony Joshua is the exact same skill and speed as Ali? Can you guys just listen to yourself for a second?
The overrated you called AJ is now the exact something your doing to Usyk! This is the same argument of AJ v Lewis a couple years back before he lost to Ruiz.
Again , the cart is being placed before the horse. Uysk win against a very overrated fighter in Joshua (And I wrote that on this very site well before his 1st loss) Now justifies a comparison to prime Ali in head to head match-up? As I wrote about Loma on many occasions (Well before his 1st loss, or wait a minute, well before his 2nd loss because in 15 total fights, he has 2 losses against average fighters, but some of you were on that train on how he beats every lightweight in history including Duran and Armstrong) Then came the Wilder fanatics , how he would ko Tyson. The Canelo fans and how he would school Hagler. Mayweather Jr, beats every great welter in history. As I wrote many times on how premature it is to compare those fighters to ATG when the best talent around in their own era they somehow manage to avoid . (And how ridiculous to compare Wilder to atg's when he looks amateurish on most occasions) The old timers have always said the best neutralizer of a south paw is quick lead right hand. Ali's lead right was almost as fast as his jab. Watch the Joshua vs Usyk fight and especially the 6th rd when Joshua decided to use his lead right how effective he was. Now imagine a prime pissed off Ali, frustrated from Usyk early success because of his south paw stance ,start to crank out his quick lead right hand from angles and distances Joshua can only dream about. Ali by mid-late rd tko would be the results. Ali just a whole different animal and level of competition. Sorry Usyk fan boys, beating Anthony Joshua doesn't justify a comparison to Ali, or any ATG heavyweight at this point of his career with his grand total of 19 pro fights and 3 as a heavyweight.
He would but Ali is certainly quicker, more mobile, smarter, and slicker than Joshua. Joshua just isn't that good of a boxer and he's stiff as hell. Toney Bellew was outslicking, outboxing and countering Usyk to hell until he gassed. Michael Hunter was also outslicking and outboxing Usyk until he started gassing bit by bit as the rounds went by due to starting very agressive just like he did against Povetkin. Styles make fights Ali would maintain that construct over 12. Easily. Usyk would be one of his hardest fights though. I got it 60/40 favoring Ali but i wouldn't bet on it