i agree with the teaming up part but i could see Kakashi pushing guy so far to go 8th gates to make him pretty much suicide himself if kakashi cant keep away and get him worn out while guy\is in 8th gate then kakashi could win, i fell like kakashi could win this hes very very smartKakashi and guy would most likely team up to beat tsunade,which wont be that easy,conisdering that euther one needs to use their most taxing jutsu(kamui and gates) to win. If she is beaten,then kaakshi and uy face off,gated guy would be too much for kaakshi. So guy wins very high diff IMO