why is this you ask?
we know yamato has been experimented on and has been the only one who lived and has the powers similar to hashirama, so if yamato were there to help the 5 kage they could stand a chance
we know yamato has been experimented on and has been the only one who lived and has the powers similar to hashirama, so if yamato were there to help the 5 kage they could stand a chance