Luffy and Zoro are the only Supernova with the ability to truly damage Kaido. This was emphasised in Chapter 1000 and 1003.
If Kaido goes down, why not to those two?
Because it is underwhelming for the supposed World Strongest creature to fall to only those 2?
"Oden" is also there,Yamato too,there is also Oden's words in his letter to Toki,"Young powerful pirates will appear in the new world in 20 years,they are the those who can strike Down Kaido".
Chapter 1000 basically confirmed those "young powerful pirates" are the Rooftop 5 Sn.
Kid and Killer may not have the abilities to deeply hurt Kaido at the moment,but they are eventually going to find them and grow stronger as the battle continues.
If it was only Zoro and Luffy who can strike down Kaido, Killer,Kid and Law wouldn't be shown during that narration in chapter 1000 so i don't get why you are pushing this narrative for the climax just because the others don't have the correct means(to hurt Kaido) atm.
Zoro has already cut Kaido in 1003, his goal is to kill him/cut him down/cut him to pieces.
This is what I meant,did you read my entire post lmao? I already said Zoro can kill him at the end but he is not defeating him with Luffy alone imo.
On the other hand,Luffy going out of the fight so early tells me he is going to have Solo moments with Kaido later unlike Zoro and the others.
We'll see what happens,if I'm wrong,I will gladly admit it.