Maybe heart? Something that Fury and Wilder have tons of, that Joshua has none Although heart isn’t something that can be learned, so it’s a good question…
I wouldn't have thought there's anything AJ can utilise from the Fury- Wilder one fight that would benefit him personally tactics wise. He's never gonna out move and out box Usyk at range like Fury did with Wilder Maybe it just a motivational thing, or a deliberate pi££ take on AJ's part knowing the video clip will be noticed.