I'm 60/40 on this matter, I would rather stick to my ideas until they are completely dismantled.
60% on Sanji countering Hax by Powrr of love shi.
And 40% on Conqueror.
Except I want Gaban, If he is present akongside Sanji in this fight, to help him develop FS. Because Armanent and Observation are the practically the only two form of Haki which can be trained.
Luffy and Zoro didn't really train for " AdCoC ". They started using it out of Spite and another Figured out how looking at kaidou.
And I don't follow Roger pirate/Straw hats parallels. Too many differences than Similarities.
Roger - Swordsman and Haki
Rayleigh - Swordsman and Haki
Gaban - Axeman? And Haki
They all don't rely on other form of power system, haki is the only vertical investment you can find for them.
Whereas strawhats.
Luffy - Mythical Zoan and Haki
Zoro - Swordsman and Haki
Sanji - Fire conjuring and Exoskeleton.
Permutation of Sanji getting new or more power ups than Gaban is way more.
And don't even get me started on how none believed Zoro would get CoC too, because rayleigh had it pre time skip.