Nagato and Kabuto win this
-Kabuto can liquify himself and use karins healing techniques to surive most of the blows of the FTG duo,,, nagato on the other hand can use the Asura armor,, to tank physical blows,, and preta to absorb ninjutsu such as rasegan,,
-With full intel,,, Nagato would use ST to repel all the kunai,,,on top of summonings and asura missiles to put the FTG duo on the defensive,,, moreover he can also use chameleon bird to assist his mobility and make this more of a mid/long range fight,,,
-Kabuto can use White Rage at a close enough distance to immobilise the FTG duo,,,, he can also use Tayuyas Genjutsu (mugen Onsa),,, and Manda 2 which the duo simply lack the firepower to defeat,,,
-Even if the FTG duo manage to close the distance,,, against Kabuto its useless,, since not only does he have DSM sensing and reflexes but he can easily counter the physical blows through liquifying and heal from the rasengan variants from Minato,,,
-The FTG duo also has no counters to CT at all since it bypasses the limits of their FTG,, and they lack the firepower to bust the orb as well as the defenses to survive it