Black blade doesn’t offer you any superpowers lmao Zoro already possessed one. It’s already a CoA haki feat combined with a swordsman’s spirit most likely and THATS ALREADY INCLUDED in surpassing Shanks/Joyboy haki. You already accounted for this in the first half, why are you counting the same thing again? You still have a god fruit awakening to worry about
Totally different level strength they offer lol.
I can see it being smaller than the gap between Sanji but it won’t be negligible lmao Luffy is the MC and he will be definitively stronger