perhaps Zoro was just using basic CoC
but if King really was using CoC, Oda could have made it a lot more clear
Yeah that's possible. Maybe it wasn't advanced CoC after all, maybe normal CoC just burst out of Zoro like it bursted out of Luffy when Kaido knocked him out.
I think all feats on the roof top were CoA and it makes sense because Tatsumaki did little damage, Hiryu Kean had Kaido scared, he never landed Shi SHi Son Son or ISDS.
Ashura with CoA makes sense to have scarred Kaido.
Only now we will see CoC Ashura, 9 Swords Coated in CoC, holy fucking shit lol