Conqueror of the Stars
Kaido can become 1 v 1 king after the death of Oden. Oden literally states if he fails no one can beat Kaido.
You are claiming Kizaru > marco, and Aokiji > Jozu based on how they won by CHEATING against their opponents. So yes it's the same damn thing.
Kaido has lived in perpetual terror of Kaido for two decades now.
Is called. Kaido isn’t stronger than any top tier, or else Luffy wouldn’t need to surpass every top tier to become the Pirate King as Luffy has stated he must do.