Asura made illusions while CoC knocked fodders, making black lightning and no-touch zone, so really hard to find similarities to put them together imo. Aside from 2 year being shortened into one day, the other fatal mistake Oda did tho, is making Zoro "wills" his just-awoken CoC to become CoC Coating just by going all out, contradicting how CoC Coating itself works since its a technique.
I mean whats stopping Oda from making CoA also unique and so powerful, even if Kaidou had hyped CoC for very strongest? If Zoro had learned breath of all things from Koushirou, which translates into CoA, Oda can always make BM surprised at Zoro's Asura, "That boy construct a Demonic Presence entirely from layers and cocoons of Armament...?! Have i EVEN HEARD of ANYONE capable doing that IN THE ENTIRE WORLD..? Just how sharp of a haki sword will he...OH...i know one BASTARD..with the EYES like those of a HAWK..." i mean it becomes more unique that way right? For M3 to have their own greatness? Luffy a CoC King, Zoro a CoA Demon, Sanji as a...something...
Zoro is really badass the entire fight and PU tho, cant say the same for Sanji. He get the worst fighting depiction, panelling out of Monster Trio lol even his PU was portrayed half-assedly.