I would say Zoro and Sanji were more prominent, because they actually needed to work together during tough and decisive situations in the arc
Meanwhile, Luffy and Zoro dynamic shifts between from "beating fodder together just for fun" (which SHs do very often) to "Zoro carrying Luffy's ass because Luffy is acting stupid" or "Luffy fighting while Zoro watches and barely does a thing"
Luffy also barely recognizes Zoro's efforts, even if Zoro is giving his best.
You actually feel like Zoro is just a mere subordinate, and Oda acts like he needs to make that clear all the time. Thats something that doesn't happen with Zoro and Sanji, most likely the opposite happens
Zoro and Sanji are a much cooler, funnier, entartaining, badass and realistic duo, given their positions in the crew and in the story overall
Thats how their crewmates and allies sees them. So yeah i think Zoro and Sanji got this