Yes it does since we are discussing a style of combat.
Let's say Mihawk absolutely mogs Gandhi in their clashes, overpowers him, outskills him in CQC, beats the fuck out of him for 12 straight hours without Gandhi being able to scratch him. But then Mihawk gasses out at the last hour because Gabdhi keeps coming back, and Gandhi kills an exhausted Mihawk, yea that wouldn't make Gandhi the stronger swordsman. That just makes Gandhi a hax unkillable monster, only dying once specific conditions are met, conditions Mihawk may not have access to.
Zoro's goal is not to be an immortal unkillable monster, he wants to be the strongest swordsman. He didn't sign up to enchant voodoo spells if that's the requirement to undo Gandhi's immortality.
If Mihawk and Gandhi engage in a dual and Mihawk doesn't come out as a victor of that duel, he is not the WSS.
It is that simple. Everything else is an excuse. Stop trying to justify a loss, that's all you need to do.
Zoro started his journey with near-supreme combat style buffed up by Physical strength alone.
Then he powered it up by haki and kept doing that through haki nearly through the whole show.
What else did Zoro do to his swordsmanship? He powered it up by willing into existence the supreme evolution of body - Asura.
Some others who arent talented in haki or arent working out physically, chose to power themselves up by eating Devil Fruits.
Some are powered up since birth due to racial benefits. Some power up through scientific enhancements.
Ultimately, it doesn't matter what your source of power is, if you lose - you are not the strongest.
Zoro will beat Gandhi on his way towards Mihawk so imagine how silly Mihawk losing to Gandhi is...