Joshua by brutal KO, round 6 at latest. Usyk won't be able to endure Joshua's power. He was never hit by a strong boxer as AJ before. When AJ unleashes the heavyweight power on him, like he did to Klitschko in round 5, Usyk will be like a truck ran over him. After watching Usyk's pathetic performance against Chisora, AJ agreed so easily to fight him. Because he understood that he can beat Usyk by little effort, piece of cake.