That still doesn't explain why Zoro needed Adv.CoC to beat a non CoC user
Or why the heck Luffy is the only one being praised as the worthy opponent by Kaido, before and after the CoC coating, even after the "Top Tier Adv.CoC user" Yamato fought Kaido
Bringing Sanji here just reinforces my argue, he will beat opponents close to the ones Zoro will beat, with or without CoC coating, know what im sayin?
By the end of the series we may have non Adv.CoC users just as strong as Adv.CoC users, or more.
I see that ability as something much more deeply connected to the character itself, like Zoro for example, this is related to his willpower to reach his dream and make his name "reach the heavens", such a great willpower that he literally uses that as an offensive power.
Thats about it