naruto would most likely win cuz of his speed genjutsu might not work on him he would hav more of a chance if he could use sage mode wit da fox which he might do when he fight sasuke
plot no jutsu or not, sage mode has already proven to be stronger than MS. and his rikudo form is supposed to be even stronger than sage mode. so yeah, naruto wins.Itachi wins but of naruto pulls it off it's because of plot no Jutsu