Zoro gets an unfair advantage to his road to WSS compared to his other rivals (whoever they are).
![Kobeha :kobeha: :kobeha:](https://i.ibb.co/P6XbSwV/kobeha.png)
Shit tier writing of Oda about all the things related to swordsmen.
I don't fully agree with it (about the grade swords part). Luck is part of strength as well. He after all decided to follow a random dumbass with a strawhat to the unknown. Ofc that dumbass is the MC and that itself is an advantage, but many others didn't try to go that unknown. He searched his own luck and got new swords. And those swords are not that impressive, not now if we compare them with Enma at least. It's not like he started cutting others swords in half in the first clash prior to Haki anyway.
Here what Oda could have done is explore more rivals for this title (and they will automatically get graded swords as well), and he didn't.
But the true solution would have been to not make any WSS title and Mihawk from the start and Zoro to be someone who simply wants to hone his strength and reach his peak, which will make these things a non problem.
Enma on the other hand, is clearly different from the other graded swords until now. It had double function, speed up his training by forcing Zoro to adapt to it (like a time chamber in DB) and by releasing a greater amount of Haki at once than Zoro would be able to do without it.
Or even 3 functions, since it forced Zoro to learn in 1 second AdvCoC as well.
This sword should have stayed as a normal graded sword like in Oden's flashback with that chance to be upgraded by coating it permanently, which would have made it simply more tough.
Btw, you forgot about Conqueror's.
Since this Haki boosts Attack Power by coating your weapons/fists/whatever with it, it's an advantage over other rivals with same fightning style but without this Haki.
Now Mihawk should have this Haki, otherwise Zoro will win because he earned the lottery from birth. And other candidates for this title, forget it, even if they exist, they won't have it which put them at disadvante right from the start.
Sanji is simply a much more complete and developed character
![Kayneshrug :kayneshrug: :kayneshrug:](https://worstgen.alwaysdata.net/images/smilies/symbols/Kanyeshrug.png)