But Akainu isnt even here to make the comparison first of all.
Secondly this isnt a combat scenario, its a force of nature at work against a weakened character, and we know for a fact that Haki isnt unlimited.
Thirdly I was asking you if King> Akainu since according to you Kaido dying to magma means Akainu> Him. So then the same logic should apply to King who is immune to magma right?