not sure i get it, throw a scaling chain
Basically, we know that people like Kidd and Law can match and hurt the yonko with their AP.
Kidd matched BM's punk Gibson and fought her off-screen, and even hurt her badly with a Punk Clash, while Law using Takt and Injection shot did a lot of damage to Bigger Mom and Hybrid Kaido, respectively.
THAT SAID, it's made clear in story that there's no way those 2 and people on their level can fight a Yonko evenly in 1v1 and win without cheating, such as how it was obvious Law and Kidd would've lost without using BFR to remove Bigger Mom from the battlefield. They both took a fuckton of hits from her, but she was clearly stronger and tougher than them.
There's a reason Law needed Awakened dura neg just to weaken Bigger Mom (and even THAT only slowed her down for a bit).
I see.
Welp, scaling King via wing slice was never my idea, so a better form of scaling for King with his sword is this:
Marco's Bluebird couldn't break King's suit.
Early King Fight Buso Zoro broke it twice (first the horn which made King go berserk, and then during his clash with Hybrid King he broke a decent chunk which revealed King's dark skin and white hair), and him doing so was treated as an incredible rarity by King's men who said that no one has ever broken it before, implying that his suit is known for its durability. This makes sense considering how much King wants to hide his identity.
Base King with a sword matched Early King Fight Buso Zoro, who even without the above suit stuff scales to the Kaifu and downscales from the Hakai.
So his value is the same, it just really needs a different justification for Kachon's reasoning.