Though Iīm still trying to figure out the outcome of this battle, or rather, what a possible outcome would do to the plotīs progression.

Itachi losing is a non-matter, heīs already dead. Sasuke wonīt die here. But Kabuto dying now would suck balls. I guess the ideal outcome would be Itachi finding a way to cancel Edo Tensei, but Kabuto still getting away thanks to his abilities. Would grant Itachi a victory, but keep Kabuto relevant, which I hope he really is.