The Juubi cannot even exist if there are 9 bijuus lol. So Kages take it and if there is a Juubi then idk maybe the bijuu team or maybe still the Kages but barely becuz the 1st can only suppress the tailed beast. He cannot control them.ok, if we consider that Juubi = power of all Bijuus, than Kages win easily, because Hashirama takes control of the other 9 and power of:
9 Bijuus
5 Hokages
4 Raikages
3 Tsuchikages
5 Mizukages
and 5 Kazekages
CAN DEFEAT JUUBI