Haki is inherited so dont act like it doesn't matter and any sword that zoro has is special since his introduction
advanced haki is not inherited though so whats your point?
cause Zoro has Conquerors and Sanji doesnt?
its a dormant power to begin with weve seen it with Ace as a kid saving luffy and sabo. Luffy using it to save Ace and so forth.... its also why Rayleigh was only able to teach Luffy the basics and concepts of haki and nothing more
all of a sudden zoros swords being "special" are a big deal its been stated since long long ago swords are like people and they have their own spirits this was stated all the way back against Daz Bones ive never heard you guys bitch about it until this last arc so whats changed or you guys all just dont know how to argue how "sanji is superior to zoro" these days?