Why tf are people surprised that Zoro is stronger than Sanji? Zoro is literally nothing but a fighter, that's his job, while Sanji's main responsibility is cooking. Zoro also trains shit-ton more and has a top-tier natural talent for fighting like Sanji has a top-tier talent for cooking
Luffy > Zoro > Sanji shouldn't be a surprise for anyone because that's how it's always been since the beginning of the series and will always be until it ends. Only a full-blown retard could argue otherwise or get shocked by that revelation