I feel like you agree with me but are still arguing lol. My point is not that they are equal, my point is that the difference between luffy and zoro and between zoro and sanji is very small which I think is also the point you are making. What I don't agree with is the notion that luffy can be significantly stronger than zoro or that zoro can be significantly stronger than sanji. IMO if luffy were to fight zoro or zoro were to fight sanji the scenarios would be those of long, drawn out fights which luffy and zoro would win respectively with only a small margin in their favor, perhaps kinda like how luffy has generally won his fights against most primary antagonists (except hodi or ceasar who were plain weak).
I don't believe Luffy to be far stronger than Zoro either, at least in the present moment of the story. Actually, I don't even think this sort of scenario is really meaningful, since they are never going to fight each other as seriously as they fight their enemies. I only presented my argument because someone said Zoro's capacity might be far above Luffy's and another person said Zoro might fight Fujitora on equal grounds. These are the arguments which I really believe to be completely unrealistic.
I demanded something substanstial to be able to judge Zoro from the last couple years, but all you got was the doriki argument from nearly ten years ago and DC mentioning that only the greatest man might become Pirakte King[no suprise from me]. That's that and I don't see a reason to change my opinion that he could be just as strong until Oda or you deliver something to argue with.