I think AJ ko's Usyk if he trains and fights aggressively. He's just got too much size and power. Of course, if he boxes like a llittle man, he loses.
https://www.boxing247.com/boxing-news/usyk-not-celebrating-beating-joshua-like-andy-ruiz-jr-did/190968
https://www.boxing247.com/boxing-news/usyk-not-celebrating-beating-joshua-like-andy-ruiz-jr-did/190968