@5th: First of all he wouldn't drop large meteors because that would be suiciding.
Also akainu is fire. Fire>wood. But not just any fire but lava. His wood will burn. Akainu was shown to punch through a large and i mean frigging gigantic rock thrown by diamond jozu and used it for the basis of a next attack which flung giant flaming rocks. Kurama is cool and all but there are giants in one piece. Doflamingo cut one of the legs off of oars with ease and in case you didn't know admirals>doflamingo. I understand all of your arguments and if the battle becomes long and drawn out then yes hashirama and madara will win.
I however, am placing my chips on kizaru's speed surprising them and akainu and aokiji's ability to at least survive, distract and do damage to hashirama and madara before kizaru simply 1hits them. With knowledge of other verses this wouldn't work but kizaru moves at light speed and madara and hashirama have not been shown to react to such speeds. Madara will die before he can even think of putting up the susano'o and hashirama will get attacked from behind. Kizaru's kicks on the rookies at sabodae were causing buildings to crumble. That kick is more than enough to take down hashirama or madara in a surprise attack off guard. Not to mention if he goes behind them and spams his lazors like he did to marco. Only difference is they can't heal instantly lol.
If you wanna be technical however then in a long drawn out battle when they actually get to see kizaru's powers and know he moves at light speeds then I can see them creating counter measures for it like having susano'o up or having a wood shield and clone prepared. That is for both rounds. However, with kizaru still holding the element of surprise and them not knowing that aokiji can freeze them instantly they don't have much of a chance in my opinion.
Kizaru moves at Light Speed but his combat range isn't light speed, in fact, weren't one of his kicks blocked due to Haki's precognition? So couldn't Madara do the same but with the Sharingan instead since the Sharingan grants the user with the ability to predict an opponent's movements before it happens? You still haven't provided a single reason to why Akojiand Akainu would beat Hashirama when Hashirama's wood release is on a greater level, If anything, Hashirama turns the entire battlefield into a giant tree and separates the two admirals... It isn't just about wood being weak to lava or ice, it's if Akoji and Akainu can pack enough power to counter Hashirama's attacks since Hashirama has already proven that he can swallow and tank the explosions of Bijuu Damas, and also invade a barrage of combined Bijuu Damas that were shown to sweep across an entire lake and land somewhere else. Madara in Round 2 alone could solo with Kurama since all he has to do is spam Bijuu Dama and Susano'o blade to blow the Admirals away into oblivion.