My bad, you're right. What I'm trying to do in this thread is come up with an explanation so that when Sanji unlocks CoC (which I believe he will) there is a justifiable in-story reason for it. Zoro wants to be the best swordsman, that's what makes him a conqueror. Since Sanji's ambitions are not to be the best at anything, something else has to be the source of his CoC.
For me, the best option Oda has is Sanji's absolute refusal to fight or hit women. Regardless of anything.
No problem. The women point can definitely be used as part of that justification, that code he's willing to die for no matter what shows strong will. But I also think the other things I mentioned are enough to justify it. Because when looking at Zoro, you say that the justification for him is wanting to be the best swordsman, I agree, but the question is, what is the criteria?. Being the best or the strongest or having a grand dream (which Sanji does have) are not consistently shown to be the justification for conquerors. The only way for us to understand what the criteria for a power is, is to look at those who possess it. When looking at at all of them, we don't find "being the best/strongest" is consistent among them. So while I do believe Zoro possessing it is justified in part due to his dream, I don't think his dream is the strict criteria for being a conqueror, not even a necessity, since that's what we see when looking at all those who possess it. Finding the all blue, sticking to his code, being a capable leader, left hand of Luffy, future legend/top tier are all enough of a justification when looking at those who possess Conqueror's, in my opinion.