Jimbei was YC2 but matched up against Who’s Who…….
Killer never healed after the Roof and still packed up Hawkins in a Mid Diff exchange. None of The Tobi Roppo are beating Killer . Also you realize King of Hell just made Zoro hit harder right? Why would Zoro need conquerors to defeat Katakuri ? Is Enma not enough? Katakuri wasn’t a tank, he’s just difficult to hit. So Zoro when he first received Enma could probably defeat Katakuri at that point.