Kizaru was the one who gave food to Luffy.
So Kizaru never actually got knocked out infact he was the one who helped Luffy get back up. If he was knocked he wouldnt be able to get food for Luffy
The 3 admirals are implied to be equal unless you wanna tell me egghead Kizaru > MF Akainu. Kizaru didnt get any stronger since marineford . If Haki bloom worked likr this all the OGs would be strong af and not weaker than their primes. Akainu is in his 50s in the end of his prime by OP standard its only gonna go down from there. I doubt hes gotten this much stronger from one fight at the age of 55.
So Akainu > Kizaru > Luffy
Akainu > Aokiji
This is all irrelevant though blackbeard is probably strongest in the verse