The level of stupidty Oda puts into Zoro is impressive in a way.
We had the famous Seraphim = King scene in Egghead, then we had the "I have CoC?" scene earlier this arc and now, to top it all off here we have confirmation that Mihawk all but point blanc told him "you have CoC mfer". And Zoro is still written as totally clueless.
And now he will unlock a power he used 5 years ago.