Usyk is miles above Joyce and outboxed him as an amateur, should they ever meet Joyce will be the winner of this thread.
If he moves up to the heavies he may get exposed for being too small. That's about it. Can't see him being dominated or ran through.
Haney, perhaps. But why Stevenson? He's a technician with good defense, excellent fundamentals, and he's a counterpuncher. He's a gym rat with good work ethic and regularly spars with Terence Crawford. He's also an olympic silver medalist where he lost in what was essentially a tie to the defending Cuban olympic gold medalist Robeisy Remirez. Stevenson to me is a pretty sure bet for pound-for-pound status in the next 3-5 years. So what are you seeing that I don't?