I dont see how Zoro and sanji are supposed to achieve the power to at least hold their own against god tiers for a while this arc
Thats like severe Tiers above where they are currently even next arc imo
Sanji has a feat over all YC1 against kizaru but thats it, oda was not even willing to zoro let touch a admiral in egghead and Sanji didnt last more than 1 chapter
Would skipping some steps to me
You don't necessarily have to be on the same tier as someone to be able to hold your own though?
Wings are able to hold their own against top tiers even without being on that level (i.e. Zoor v Kaido and Sanji v Kiz)
Moroever I think you're underestimating the power of the narrative which imo is what dictates everything in this series.
If the narrative demands the wings to be strong enough to hold their own against Imu then they will.
Keep in mind that Luffy got one tapped by Kaido early on Wano and in just a few days grew strong enough to be able to not only tango with him on equal footing but also come out victorious.
Personally I think the wings are going to be getting filthy powerups this arc.
Like I've said for a while now their benchmark is Ray and Gaban. So expect them to be as strong as those two were in their primes at the bare minimum by the time this arc ends (i.e. both were on the higher end of the top tier bracket)
Ray/Gaban level with some kinda plus alpha is my expectation for both this arc
