What's your reasoning for this? Seems kinda random that Zoro would kill Kaido in a final war that he has nothing to do with.
I never made a bet for ZKK before because people only associated it with Wano, but most Theories for it apply on ZKK in Story in general, so Wano ending doesn't 100% prove it won't happen again
And then re-reading entire Raid made me realize that Oda actually spoiled entire Ending of each and every SH, not just Zoro
ZKK is only one of Nine Scenarios that Wano was hinting at, the other SHs will have equally important Scenes at the end (After their Dreams are fulfilled, so for example ZKK will happen "After" Mihawk Fight and Ryuma One-Shot does support this in multiple ways)
Kaido won't be be a Major Character in Final War but he will still have a Sub-Plot similar to how Perospero or Kanjuro were Side-Villains during Raid
Anyway I'm 100% certain about this, I will share the Full Theory when I'm ready. I also believe that Zoro vs Mihawk wont be witnessed by lot of people but ZKK will and that's when Zoro declares himself as Strongest Swordsman and tells them he defeated Mihawk (Similar to how Kata Defeat was Announced)
Kaido Sub-Plot won't revolve around Wano or Revenge against SHs, instead it will focus on his Hatred towards World Government (Similar to how Crocodile neither cared about Arabasta or Luffy anymore but went for WB who defeated him in the Past)