Zoro v Kaido huh
I ventured these waters many times.
Zoro tackled Hakai for one second with his barrier haki and perhaps dissipated some of its blast energy, regardless Thunder Bagua is most likely massively inferior as an attack and Zoro should be capable to push many away and or comprise their energy before being tired. Plus he can likely dodge a few since he had displayed better reactions than Luffy against Dragon Kaido against Boro Breath and despite Luffy acquired ACoC which granted him better speed perhaps they have similar reactions now even if Zoro doesn't rely on ACoC.
Hiryuu Kaen not his strongest Base attack on paper whilst healthy but hyped so astonishingly by Big Mom. Healthy Asura likely rips 25% HP off Kaido in one strike but it's probably to be used at last. Meanwhile he can focus with Shishi Sonson and other heavy hitters of that kind which are also fast other than potent. A Purgatory Onigiri if he manages while Kaido is in danger.
Let's see if Kaido has awakening or not, if he doesn't I don't see Zoro inferior for now. If he can manage to push 5-10 TB away and dodge a few and he can beat Kaido in 10 Shishi Sonson + 1 Asura strike.
I think Kaido can likely not dodge SS because Zoro in Asura is vastly blitzing Kaido and his Base speed should not be too weak and SS is a particularly fast attack.