A great match up I must say for DSM Kabuto, but I still think he takes this (high difficulty though).
Edo Madara > Edo Hashirama - Madara was stalling for time until Naruto and Sausage took down Juubito. If Madara was "trying" then I'd like a justification as to why Madara ignored using Hashi's techs on top of his own. Hell you can even see in the little bit of fighting Kishi showed, it's Madara trying to stab him with rods. Should just add that Madara neg diffed BM Naruto :x.
G&S Brothers > Tobirama - He lost to them + having the 2nd Raikage on his side.
Naruto, Sasuke, Minato, and Hiruzen and Itachi will have to take Kabuto down w/o killing him to begin with. So Sasuke and Naruto aren't using destructive techs like Tailed beast bombs or PS slashes. They'll also have to get through a lot of edos just to get to Kabuto. In that case he could easily escape while his edos keep them at bay + Nagato's chameleon can mask Kabuto's presence, making escape that much more certain. Itachi couldn't find Kabuto, he found him because of Nagato. While Kabuto hides manipulating his edos.
Should just add that Naruto, Minato, Tobirama, and Hiruzen have no counter to Jinton from Muu unless Itachi and Sasuke can cover.
While Itachi, Sasuke, Minato, Hiruzen and Naruto can spam all the techniques they want, the only one that can really efficiently seal is Itachi's Totsuka. Minato and Hiruzen have only shown RDS. EMS Sasuke can only maintain Perfect Susano'o for minutes. Naruto has about 10-15 minutes of BM mode before it poops on him. So the edo army's unlimited stamina overwhelms edo Itachi, Hiruzen, and Minato.
While the edos are slowly defeated. Edo Madara finishes Hashirama up after an enjoyed match.
Edo Madara comes in to help the other edos. Edo Madara now has a pooped Naruto/Sasuke, Edo Itachi, edo Minato (who ran out of 9 tails chakra), and edo Hiruzen
Edo Maddy shits on all of them because they're worn down.