So Sasuke has a 3-tomoe and the Curse Mark? And Naruto has basically nothing but his summons and an imperfect rasenshuriken?
Yeah Sasuke and Naruto lose big time, unless Sasuke can manage to pull off some miraculous regular genjutsu to save them. If he can't then they lose.
VERY SIMPLE naruto tries with as many attempts as he could back then (2) each time he used sage mode (which he learned b4 fighting Pein) and he could sense raikage's 1 finger tech like he did in the manga
sasuke can wait for raikage's shields to dissipate and then hit him with kirin that he's been preparing since the beginning of the match with fire jutsus; so tag team wins xd
VERY SIMPLE naruto tries with as many attempts as he could back then (2) each time he used sage mode (which he learned b4 fighting Pein) and he could sense raikage's 1 finger tech like he did in the manga
sasuke can wait for raikage's shields to dissipate and then hit him with kirin that he's been preparing since the beginning of the match with fire jutsus; so tag team wins xd
I think MS Sasuke and KM Naruto should be fighting.
To answer your question, 3rd pwns.
Only way naruto/sasuke can win is if naruto lands a rasenshuriken and sasuke follows up with a CSLVL2 chidori to sandaime's heart. This can happen if Sasuke gets the third in the same paralysis jutsu that itachi got oro with.
But the chances of this are microscopic as the third is way too fast for sasuke to get him in that genjutsu, and it probably won't work because of his constant active chakras, and the chidori might not be enough even with the shield down.