None of this shows Sanji sharing the vice-captain–like position with Zoro.
Then nothing puts Zoro in that vice-captain-like position other than joining to the crew as a first member.
- Leading a group of the crew when its necessary? Sanji does that.
- Having the greatest bounty after the Captain? Sanji has that currently, not Zoro.
- He gives trust to his crewmates, like he did in Enies Lobby and he helped Usopp so he could find a way to be useful.
- Being clever and wiser than his captain when its necessary as a vice-captain? Sanji is clearly smarter than Zoro.
- No one ever called Zoro vice-captain, and no one cares about Zoro's authority, especially not Sanji.
Zoro has no parallel with Rayleigh, definitely not because he didn't join Luffy's crew at the beginning, lol at reaching to find a parallel like refusing to join, Sanji refused to join Luffy at the beginning as well. Sanji can be a vice-captain just as easily, and he would never accept Zoro as a vice-captain, who would never accept Sanji as a vice-captain as well. They are equals.
If you want to find a reaching parallel like that how about this?
- Sanji tells Luffy to piss off when Luffy first invites him to his crew.
- They both are blonde
- They both like women
- They both have similar mustaches
- One is ''dark'' king and the other is ''black'' leg