If the commanders are included, and Naruto/Bee then they win Super High Difficulty.
I see Madara taking out more than half of the army with meoters. And if Madara decides to use that technique with wood clones.. :ghehe:
If meteors are used, then Bee and Naruto could just take them out with a TBB. Also, I'm pretty sure that a technique like that would cost a good deal of chakra, so he probably couldn't have the clones use them if the chakra is spread out so evenly.
Plus I'm sure that with a many superpowered people punching on his susanoo like crazy, and with many using powerful ninjutsu's that he wouldn't have time to even use that sort of technique.
Madara seemed perfectly fine after using this justu twice.. And Madara even mentioned having his clones use Susanoo..
Dont underestimate Madara Uchiha he nearly took out Garaa and Onoki regiment with this technique and seemed to have a large amount of chakra left.
Also, what will most people do against wood style and pollen? Especially the pollen justu. Tho im making Madara seem unbeatable, he's not. His true weakness as same as Tobi is underestimating people. That will cause him to lose..