I've no doubt that if he does move up to heavyweight then Usyk will be more skilled technically than anyone in the division, he could show the Fury fans what a proper slick-technical fighter looks like. I'm kind of surprised he's taller than Povetkin, so it just remains how he carries the extra weight and how he handles the power others can dish out in that weight class.
I just can't see him being able to absorb the power of Joshua(the fight his team said they want) and if Bellew can tag him then so can AJ. I suppose he would have a totally different gameplan, seems very versatile to me watching some of his other fights.