Jeez, the amount of frustration.
Chill man
Sanji's fight in WCI was an internal fight, it was not a fight of strength or power up. It's us fans who were pushing the agenda of "Sanji will release this power up, and this and that" when Oda wanted to test his character and ideals, nothing else. While the war of Wano is getting close, Oda already handed him the power up he needed, just like he is doin with Luffy and Zoro
And also, speaking of someone getting power up faster than someone else, honestly, it does NOT do Zoro any favor, cause it will only look like Oda is favoring Zoro and making him have an easier way during his journey while Luffy struggles to obtain a power up, and Sanji from a decade to another to obtain a power up LOL
Again, you are doing a misservice to Zoro by stating he needed less chapters lol