Actually i believe the kages can pull it out since the only way to actually kill them is by sealing or obito teleporting them to another dimension.....
And with only 3-4-5 kazekage team kage already control the earth itself with all their combinations of sands, let alone add to that the 1st and 2nd which we don't know their abilities, but most be about the same. Then over that add a Mei Terumi adding additional pressure with her boil release.... Yagura reflecting attacks in order to defend the kazekages from long distance attacks.... Trollkage using youki boy, since he might get owned in a genjutsu fight, but who knows maybe he can take on sasuke in genjutsu.
Then we have the powerhouses such as third and fourth raikage smacking susanoos down with the combination of Oonoki+raikages...... Then we have 1st and 2nd raikage which must have something like the other two raikages so there we have 4 light speed powerhouses running around
And while everything happens nobody has noticed muu running behind one of the overpowered uchihas in order to make a point blank jitton and gain time for gaara to seal the uchiha that gets jintton'ed... And we still have the 1st tsuchikage to count also....
Meteor attack won't do big deal, because all the kages are edo also, so nothing happens as far as for feats the only real threat here is Itachi with his totsuka blade and gaara with his seañing technique ultimate sand burial in which he almost sealed madara during their fight
But i can clearly see uchihas getting overwhelmed in this fight, don't underestimate the kages and remember there is still 1st tsuchikage, 1st raikage, 1st kazekage, 1st mizukage which all lived during hashi and madara period and for sure they must have crazy strong powers... Since madara himself considered the NEW kages a waterex down version of what he remembers.