Highlighting Mihawk is same as saying, why didn't Oda show us One Piece & All Blue & Void Century & All Healing Cure & World Map ... etc
Zoro's Journey towards WSS isn't about how Strong his Opponents is, cuz no matter how much People wanna Hype them, They are always No Match for Zoro
Instead They are Opponents who ask certain Questions & push Zoro to reveal the Answer, which would represent One of Most Important Ingredients to become WSS
Hatchan asked the Question "What if Zoro faced someone with More Swords"
Zoro gave us the Answer by showing how important Quality of Swords is, over Quantity
So Lesson 01 ---> "Best Swordsman only deserves Best Sword(s)"
Mr. 1 asked the Question "What if Zoro faced someone He couldn't Damage?"
Zoro gave us Answer by learning Breath of All Things, which represents Swordsman's Ability to choose what to Cut
So Lesson 02 ---> "Best Swordsman should be able to Cut anything in their Path"
Ohm asked the Question "What if Zoro faced someone He couldn't Reach?"
Zoro gave us Answer by learning Flying Slashes, which represents his Ability to use his Attacks from Range
So Lesson 03 ---> "Best Swordsman should be Physically so Strong, They can Cut from any Range"
Kaku asked the Question "What if Zoro faced someone with All Three Previous Challenges Combined & also Counters Zoro"
Zoro gave us Answer by learning Nine-Sword Style, which represents Zoro's Peak Style
So Lesson 04 ---> "All Three Previous Achievements are Irrelevant, unless you have Greatest Sword-Style"
Then He faced Zombie Ryuma, which was simply Mini-WSS Fight, it's basically Pre-TS Version of WSS Duel
And what happened? Zoro was Perfectly Equal to Zombie Ryuma with Two-Swords
Meaning He is Faster when using One-Sword (But Weaker), and Stronger when using Three-Swords (But Slower)
Indicating that Zoro officially have Access to Level of Gentle Blade & also Strong Blade that is above Zombie Ryuma
So Oda created Zoro's Fighting Style in a way that would make him be Perfectly Matched against WSS, while still proving that Zoro's Swordsmanship is Superior, which is ngl, Very Smart Idea
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As for Post-TS, Zoro will have Five Main Fights as well, with Five New Skills to Highlight
However, this time his Opponents didn't offer a New Challenge, They instead got same ones as Pre-TS
But Fight Scenario requires Zoro to Highlight for us what He needed to learn
Hyouzou Fight ---> Highlighted Zoro's CoO
Pica Fight ---> Highlighted Zoro's CoA
King Fight ---> Highlighted Zoro's CoC
So Three Lessons of Post-TS are "Best Swordsman must Perfect all Three Types of Haki so that Nothing can Counter him"
Because as much as Hyouzou, Pica & King didn't have many Attacks that Zoro can't handle, but their Fights were written in a way where if Zoro didn't have CoO, He would have Lost against Hyouzou due to his Backstabbing, and if He didn't have CoA, He would have Lost against Pica, and if He didn't have CoC, He would have Lost against King due to Enma
Now for Zoro's Next Opponent, He is gonna be just like Kaku was Pre-TS, a Combination of All Three Challenges
Meaning Zoro is gonna Face someone who will Truly Test all his Three Types of Haki together & Zoro gonna Unlock something New
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So Overall, Zoro's Journey revealed to us that you cannot be WSS unless you have:
1. Peak Blade(S)
2. Peak Breath of All Things
3. Peak Physical Strength/Range
4. Peak Sword-Style
5. Peak CoO
6. Peak CoA
7. Peak CoC
8. Peak ??? (Zoro's Penultimate Lesson)
And when you look at Mihawk, even though We barely saw anything of his Capabilities, We were shown enough to understand He is "Best".
1. We don't know how He acquired Yoru,
2. We haven't seen his BOAT Highlighted
3. We haven't seen his Max Strength
4. We don't even know Name of his Sword-Style or any Named Attack
5. We don't know how much He Mastered CoO
6. We have never seen him Use CoA
7. We have never seen him Use CoC
8. We know nothing about his Trump Card
And yet, it's pretty evident that this guy have Best Blade, his Student was able to Cut even Kaidou, just Shockwave of his Swing was able to Cut Huge Mountain, He is stated to have Perfect Sword-Style (Combines both Gentle & Strong Blade), his Eyes & Epithet & entire Design highlights his CoO, his Black Blade is proof of his CoA Mastery, and Shanks inability to Defeat him is a sign about his CoC, and Finally his entire Personality, Design & desire to Face someone Stronger than Shanks indirectly confirms He dreams of revealing his Trump Card to someone
Zoro's Journey is Perfect Hype for Mihawk, and i have never seen any Character getting Hyped like this in any Fiction without doing anything, while everyone else needs to Hype themselves & flex their Power, Mihawk gets Hyped by World Building itself, that's the same way One Piece Treasure is Hyped, We have no idea what it is, but Luffy's Journey keeps Hyping it every single Arc
And Every Ship that appears adds more Hype to Franky's Final Invention, and every Flashback that is shown adds more Hype to Void Century Flashback, and every Doctor or Cure that is shown adds more Hype to Chopper's All Healing Cure ... etc
Zoro vs Mihawk is imo Best Rivalry in One Piece & among Best in Fiction Overall