This is a thread about Zoro's relationship with EVERY Strawhat member. Sanji is included. I brought Usopp, Nami, and Franky at the same I brought up Sanji, and it wasn't even about power when I did that, but about leadership skills and guiding the actions of the crew. But "Sanji vs Zoro" is magically the only part you see. Notice how in this thread, I've never actually touched on the topic of Zoro vs Sanji, only its status in this thread.
1. What makes you think I care about how you feel about Zoro's intelligence?
2. If I think he's an idiot, so what? If you're fine with people saying Zoro is flawed, and I think that's his flaw, why does it translate to me hating him?
3. I don't say Zoro is an idiot nearly as often as you'e trying to make it seem here.
Considering that Zoro is a reclusive, unsympathetic and rather simple-minded individual, no, I don't think he'd be in a good position to command the crew for very long. The best bet would be a joint democracy between him, Robin, Nami, and Sanji.
Nami, Robin, and Sanji are all definitely more intelligent than Zoro is. The three of them working together would be better than Zoro having absolute authority because they think things out better than he does(all three), communicate better with the crew(Sanji and Nami, to some extent Robin), all have a bigger threshold of knowledge(especially Robin and Nami) and have guided the crew's actions more times(mostly Nami).
I don't think any of them individually would make good leaders for the crew based on what kind of crew it is.
Oda has shown it several times the crew acts as one unit, and without a hierarchy, in actuality.