My analysis...
The main problem for the kage would be managing to get around the Mist that Zabuza would eventually create,which will create the necessarily openings for the silent killing tech.And Zabuza's silent killing as Kakashi noted is second to none.
The 7 Mist aren't to be taken lightly,sure Kakashi,Gai,Sai sealed them,but needless to say they had the help of an entire division,which the kages don't have here.
The Kages have shown to work flawlessly when in tandem,namely Onoki+A combo,or Gaara+Onoki combo,or even Mei+A combo so to say,so the Mist won't have an easy time.
The main problem as i said would be getting rid of the Mist that Zabuza created,of course they need to do it in short time or else casualties will befall them.
But it must be said that the only shot the swords men really have is if the mist is active for most of the time of the battle,because if not then it's a murder case for the Kage,seriosuly A at V2 armor could simply blitz his way trough every single of them,due to the abominable speed,elemental advantage of Raiton vs Suiton,and gargantuan amount of chakra to force his way trough any opposition
This without factoring all the other kages abilities,then put that x ability of any of the kage and you have a murder case and a serious,for instance Onoki could charge the Dust tech and nuke the landscape xd
The chance the Mists have here is too pull the Hidden Mist tech right off the bat if not they get annihilated
wease:
