Kaido dodged Snakeman and counter attacked, just as he multiple times dodged G5 and counter attacked. He also blocked Snakeman's attacks after getting pummeled.
It is to show that Kaido is complete in all regards. Tanking, attacking, reacting and avoiding. Kizaru stalling a Snakeman without adv Haki isn't that glorious feat you think it is. As
@JoNdule pointed out, Kizaru just replicated Katakuri's feat and Katakuri was shitted on as being the weakest commander. Now suddenly Kizaru is PK level for doing the same.