Luffy will be stronger than Kaido while fruitless due to his COC.
Oda made sure to state Luffy is CoC Specialist
Luffy still has to obtain CoC level 3, Roger and Shanks COC level that allows them to fight the Yonko without a OP devil fruit, only available to COC Specialists
Luffy will obtain this and fight blackbeard, a person stronger than Kaido while fruitless. This is why Oda showed us how strong Luffy was in seastone cuffs without devil fruit and hai in Udon Prison and also showed us Base Luffy keeping up with Hybrid Kaido.
And chapter 1026 and 1037 Base, Gear 2 combined with Gear 3 Luffy Pre Awakening is very powerful
So all in all, this is Luffy's last showcase of him using his Devil Fruit.
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In Wano Luffy gained the ability to use gear 2 and gear 3 together simultniously(RoC attacks), from seastone training and he gained the ability to Switch between Gear 4 forms mid fight as well as enter and exit Gear 4 easily.0 Chapters' 1037 and 1042
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On to Zoro, Zoro and Luffy have Swapped positions, meaning Zoro's powers are fragmented.
We do know he is getting a blackblade right now.
He had Kinemons foxfire fighting style for offense(attacks) and defense(cutting).
He has Ashura
He has Enma
He has CoC and
Adv CoC-King of hell mode(KOH)
He has to find a away to combine his KoH with Ashura and Kinemons foxfire stye