I just find it astonishing that the only truly reliable ground we have here is Luffy and Lucci being obviously above Zoro and Kaku yet your analysis of this situation leads you to conclude that Zoro and Kaku are stronger because they're paired with S-Hawk instead of S-Hawk being weaker for being paired with the duo we have actual reasons to think of as the weaker of the two.
Kaku already proved he is more genius than Lucci by awakening his DF in 2 years while Lucci has it for longer.
This already puts Kaku above Lucci.
Zoro sleep diff Kaku, he used just basic haki(or ryou if you considered that advanced).
Luffy used G5 plus basic haki.
Stussy waited Kaku to have full focus on Zoro to knock him down then she went a fair 1v1 with Lucci and knocked him down.
What evidences are you seeing that supports Luffy and Lucci being stronger than Zoro and Kaku?