I don't know the "oh but Luffy and Zoro have it so Sanji must have it too"
Luffy and Kid have COC but Law doesn't. Law is supposed to be the leading pirate of the Era. He's a D. He has ambitions. He has dream. He has unyielding will. And yet he doesn't have COC.
Not saying that Sanji won't have COC. But these "others have it so Sanji must have it too" is akin to "Zoro goes to the roof so Sanji must go too".
What is Law ambition ? Laws only goal was to get revenge from Doffy. No anothr ambition for Law.
Secondly , just some fanboy think like that and just you cared that ones.
To me , sanji does not have to go roof. Because , he did very good thing under the roof. People just think if you face Kaido , rest is unworthy. But under the roof , sanji manage lots of things. Just people choose to humilate these kind of things like baking cake.
Till now , the most important things in war were made by zoro and sanji if you look objectively.
Zoro saved roof top boys life.
Sanji saved under roof tops life .
Oda thought those are equal in terms of importance.
All normal manga reader see like that. Just in the here , some kind of creatures fight each other.
In terms of CoC , personally , ı dont think zoro and luffy got CoC , sanji got CoC . Nope .
Sanji has already had conqueror feature. His character , will , and royal blood made him suit candidate for CoC.
His dream has so fantastic and proper for CoC. (nobody see All blue during the series , just a legendary , luffy and zoro know how to become wss or pk. but sanjis dream is not that type.)
Because of these reasons , I am okey with Sanjis CoC .
As Shanks said,
It's okay to cry, the important thing is to get up and continue.
Sanji did like that.
Some ones that sharp idea about characters dont accept or dont want to accept some reality.
If the Oda made a official declaration that sanji and zoro are equal or zoro is stronger than sanji. , there would be a lot of people who would deny. These are empty discussions.