which version of the hulk?
Aang can do more than throw rocks at at fist. He has both speed and agility plus a glider allowing him to take to the sky add fire and water bending the mix and Aang has more than a chance. Can can freeze and melt water instantly and turn the ground to mud. Aang has both versatility and variety. no one is being on hit. 7/10 Aang fist is brilliant but i think aang has this.
Spidey has the advantage in speed, strength, agility, intellect and so on.
normal korra has no chance however avatar mode korra does have a chance but that depends on how discipline she is because spidey is very intelligent and will exploit every weakness including korras impatience.
round 1- Hulk because i don't think yamcha and the others have the raw power to beat the hulk immediately and the longer the fight goes on the better it is for hulk. 6/10 to the hulk.
round 2 - Z-fighters 18 is the reason but i still think that if the hulk reaches WB he could possibly win but i doubt 18 will allow him to reach that level. 6/10 z fighters
round 3- Z fighters piccolo, 18, goten and trunks might be too much for hulk to handle however hulk still has a chance due to Trunks and Gotens ability to annoy their opponents. 7/10 z fighters
Technically Hulk has no limit to his power but i fear he will be long dead before he acquires the power to even fight tthe Saiyans on an even footing.
Whether it's The Maestro , WWH or even WBH none of the hulks can beat the Saiyans.
Regardless of how you look at it the advantage lies with Kizaru. Look the simple answer is Kizaru doesn't need to be overly powerful. There is a reason why flash can punch and hurt superman even though he is nowhere near the strength of supes and the answer is speed.
Kizaru's power is immensely powerful and assuming that kizaru is a skilled fighter, one can make a successful case for him beating most of the One piece characters.
to answer the topic.
I'll put my money on akianu based on what we have seen so far and here is why; kizaru appears to be a bit of a ditz he lacks both the focus and psychological power to beat akianu. being the strongest or fastest doesn't guarantee a win especially in one piece. kizaru tends to deal with problems in a more straight forward approach thanks to the nature of his power and with akianu's haki, strength and skill i feel that he out clases kizaru is most aspect.
this is hard. the real question is what is the extent of Marco's power? if you look back he didn't do much in the war. looking at Marco's status i don't think law or kuma could take him but due to lack of evidence this could go either way. it's evident that if you have a strong enough haki you can fight law. at the end of the day Haki will be the deciding factor