It sounds crazy, but Kaido's AP is very unimpressive. Especially when compared to Zoro's. Kaido isn't going to be eating three upper end attacks from King of Hell Zoro and still going.
@Fujishiro: I find Hybrid Kaido disappointing and expect him to have a Trump Card that he's still holding in reserve.
I scale King of Hell Zoro to Prime Rayleigh/Oden though. Both of them would beat Hybrid Kaido based on his disappointing performance. Well that's not why I think Zoro beats Hybrid Kaido, his showings are just disappointing.
@Fujishiro: EOS Zoro would in fact be above Roger. EOS Zoro would be the strongest swordsman of all time.
@Fujishiro: offensive prowess wise, yes. Luffy cannot afford to be trading blows with Zoro the way he was with Kaido. The finisher that Zoro landed on King probably one-shots Luffy if it lands.
That said, in a tier list I place Zoro and Luffy in the same tier. Luffy's stamina is arguably better than Zoro. And offensive prowess isn't all there is to a fight.
Kaido isn't going to be eating three upper end attacks from King of Hell Zoro and still going.