A stab and a slam is plenty for Kaido to get a taste of his power and rank him among top 5.
It is not headcanon that Kaido has fought all 5 of his top 5.
Not at all, I am literally telling you what the author said about Oden's strength.
Nice story when you look at isolated panels and ignore context.
Luffy is showing off DF Awakening and Kaido tells him that cannot conquer the seas and tells him about the only example that did conquer the seas, a DF-less Roger. This has never been about sucking off Roger but showing the example of haki conquering the seas.
Thus >Haki conquers everything and we proceed with scenes like Shanks/Joyboy's haki negating DFs...
This is literally Oda establishing a pecking order of haki>everything.
Oden is indeed not Roger's equal, because he is stronger.
Narrator literally confirmed this. In case, the only guy capable of leaving a scar wasnt enough of a hint.
Or that Oden said nobody can beat Kaido if he cant beat him.
You have to deny quite a lot of things to pretend like Oden isnt the strongest among Kaido's 5.
And for what? This guy? This is your hero?