Swordmanship consists of haki you retard. What the fuck did you think the last upgrade for Zoro is about?
So everyone who is proficient in haki is a proficient swordsman? Kinemon fire-cutting skill is a haki or swordsmanship? you cut with sword not with haki right?
Zoro amplified his attack power with haki upgrade. He learnt Kinemon technique which is related to swordsmanship. Haki enhances the fighting styles be it a martial arts or devil fruit powers or swordsmanship.
Fujitora dropping meteor is a sword skill or DF ability? swordskill is basically cutting something. Haki is a tool just like a sword. Haki enhances the attack and defence power.
For example,
Zoro with swords > Luffy with swords when they have same haki because Luffy is a shit when it comes to using swords. This is not the case with Shanks
Shanks is a swordsman and so is Mihawk. By title Mihawk > Shanks. However, there is a possibility that Shanks haki is higher than Mihawk even though Mihawk is more skilled with swords than Shanks. Both are sword fighters in this case. So haki can clear the gap.