1. Big Mom warned Kaido to take it seriously, he wasn't scared- he wasn't even going to move without prompting.
2. Dodging a slash to the neck doesn't make you "scared". Was WB scared of Ace when he prevented his knife sneak attack in his sleep?
3.Kaido's eyes were bulging with veins- which they weren't against Zoro's enma slash, when he got blitzed without time to evade by Kong gattling.
4.Kaido has survived the finishing attack of someone with MASTERY over Enma, it left him with scars, but don't act like this one shot would have killed him, it would have done significant damage, but there is no need to overhype it until we see what happens when/if it hits.
5.Kaido was hallucinating Oden,Shanks,Roger,WB and his own fucking captain ROCKS after getting slammed by red roc, I don't see Kaido having any feelings with regards to Zoro on that level at all.