I'd favour Usyk, he'd move and counter and out box Dubois. Dubois has a punchers chance but that's it. Usyk is simply the more skilled boxer and Dubois is too predictable.
Dubois has the potential to be the heavyweight champion but at this stage is still unproven. If they fought each other in their next fight, I would pick Usyk to win.
Dubois is too green. He needs more rounds before fighting someone like Usyk, since I think Dubois has only been 10 rounds once.
Dubois knocks him out. The thing is Usyks power can't hurt him. Also, Dubios has a better jab, reach, power - he will knockout Usyk in 5 rounds.
I like Dubois, very interested to see where he goes. Looking forward to his fight w/ Joyce coming up too. But if he fought Usyk next, I think Usyk beats him. Too soon for Daniel IMO. And Usyk has a pretty good pedigree in terms of boxing ability, even if he can't KO the big guy.
Dubois has a punchers chance nothing more.. Usyk moves to much for him to get fully set at this stage in Dubois development. Give Dubois another year. Let him face Joyce and one other. Then he can take a belt off Usyk.
As of now Dubois shows much better combination punching, punch selection & fundamentals than an aging Chisora. Whether he can apply those skills against a contender & show poise in doing so is the question.
I view Dubois as being more talented than Chisora. There were times in the Usyk fight when Chisora was connecting on Usyk despite the fact that Chisora was badly telegraphing his punches. I wouldn't bet on this fight because I think Dubois would have a better chance of catching Usyk than Chisora. I'd give Usyk a 55/45 edge.
DuBois could use a few Top 10 fights under his belt. If he plays his cards right and stays undefeated he could have a title shot in 2-3 years. I know this discussion is hypothetical but Uysk is a very risky fight for the young man at this point in his career.