Spot on - i think Parker under Lee is a different kettle of fish entirely. I'm going for Parker UD or late stoppage on a completely gassed Zhang. Aside for that I DON'T see Johsua KO'ing Ngannou. I think he will fight super conservatively like in the repeat against Ruiz on his way to a wide - and safe - UD. Would be happy to be wrong on this, but it's the safe play.
AJ wins on points. I know you CAN'T apply the transitive property in boxing. (if A can beat B, and B can beat C, then A can beat C.) HOWEVER, i'm gonna do it anyways. Given how thoroughly Zhang dismantled Joyce, and given that Joyce is the only person to beat parker by KO, i feel confident in predicting that Zhang will KO Parker. Also, I'd love to see Zhang vs AJ/Fury/Usyk before Zhang gets too old.