Without kurama, madara gets wrecked
--BM Naruto hands out the chakra cloak to each of them thus enhancing their offense and durability, whilst he creates KB and gets them to fire off FRS/COFRS, Rasengan Barrages and Mini-TBB, that will easily bypass all of madaras defenses bar PS
--Naruto can stall madara quite well here through the use of his clones and kurama avatar which can tank PS slashes, whilst killer bee and itachi get at a safe enough distance,
--Naruto and Bee then fire off TBB much larger than PS itself and then proceed to fire off barrages of TBB which would obliterate madaras PS along with himself
--BM Naruto alone gives EMS Madara a hell of a fight, with killer bee and itachi by his side, madara doesnt stand a chance
With Kurama however, Madara beats them low/mid diff at most,
--Multiple PS-infused TBB are too much for them