Dude, you need to stop jumping the gun everytime something happens.
We don't even know Saturn's skillset, how this feat scales etc.
Let's wait few more chapters to figure out what's going on. For all we know, Saturn can do this to Zoro as well, who knows?
Also, you're never going to convince anyone taking the "wings" thing literally to powerscale. They are mirror of dudes having Zoro and Luffy equal.
As far as powerscaling is concerned, Zoro is ambiguously somewhere between Luffy and Sanji, this ambiguity is by design for Oda to do stuff and not care about powerscaling. On average, Zoro is probably in the middle of Luffy and Sanji (like he's 7.5 is Luffy is 10 and Sanji is 5).