They're going to win it in part because Shikaku got his plan to the alliance prior to being destroyed.My nigga Madara never disappoints, good chapter even tho Sasuke wasn't there. The Juubi, Biju dama goes beyond levelin mountains it's destroying villages like Pain Chou Shinra tensei, one shot at Naruto em and they are dead. I have no clue how they're going to win this. I didn't expect anyone to die in this chapter, but Madara realized last chapter it was strange how the Shinobi alliance devised a plan against them so fast, he knew to take out their mind good job Madara.
Not to mention they still have Shikamaru and Kakashi there, and I wouldn't be surprised if random intelligent ninja popped up out of nowhere from other villages. It's not like they killed the only intelligent people in the shinobi world.