Starting Distance: 40 m
Location: Chunin Exams Stadium (Finals)
Knowledge: Manga
State of mind: IC
Restrictions: Yata Mirror, Edo Tensei, Genjutsu
Hmm, that's really a tough one.
Amaterasu would honestly not be too much of a factor in that fight. Like we know, both Itachi and Sasuke can quell the flames with their eyes [
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] [
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-
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], meaning that if needed, both can protect themselves, and their partner if they get caught by the flames. Kabuto also has the Body Shedding technique [
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], which has been shown to be an effective counter to the Amaterasu [
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], and since Sasuke now has the EMS, quelling the fire would not take too much of a toll on him as Itachi, so all in all, I think that the Amaterasu would not become too much of a factor in this fight.
Now, if we look at the other techniques they have in their arsenal, I'd have to give it to the Third Raikage and EMS Sasuke. Sasuke has knowledge on Kabuto's Liquefying technique, and with the Raiton of the Raikage, I'd say that they could likely take him out, fairly quickly. The difficulty of that would depend on if Kabuto manages to get into Sage Mode or not. After that, the combined effort of Sasuke and the Raikage should be able to take out Itachi.
Shortly put, I'd give this to the Raikage and Sasuke, high diff.