You know i'm Big Mihawk Fan & also Big Advanced CoC Fan so i have to disagree here
The only reason i didn't want Mihawk to have Advanced CoC is to let Shanks have something unique for himself
But apparently he doesn't
I do expect him to have like Advanced CoC Level 2 though, similar to how Luffy have Level 2 Advanced CoA & not just Level 1 taught to him by Hyogoro
With this Advanced CoC Reveal, it's pretty obvious man
Roger/WB = Shanks/Mihawk = Luffy/Zoro = Kaido/BM
Teach is either Weaker than them all or Stronger than them all
This is why WB insulted all Three Admirals who attacked him but was silent when Mihawk attacked him
It's because Oda doesn't want us to Hype WB at cost of Mihawk just like he didn't do that when Shanks met him
And that's why Shanks/Mihawk are Introduced since East Blue Saga, they are clearly the Supreme Kings
And Luffy/Zoro promised to beat them
Imo, Final Clash in One Piece should be Luffy + Zoro vs Shanks + Mihawk (After Final Villain is Defeated)