Naruto underestimated himself.
Look into their arsenal, Naruto (SM) takes Sasuke (MS)
Sage Mode > MS Sasuke
Why Naruto (SM) > Sasuke (MS) :
Sasuke will engage Naruto in taijutsu first. Like always, he will get raped by Frog Katas. Frog Kata is far stronger than any normal tai jutsu, it wraps around the users body (like a chakra cloak, except natural energy), it gives the user increased strength in tai jutsu and a larger reach
Naruto has the speed to dodge Susanoo arrows and if people believes Sasuke can outlast Naruto.... There is a big diference between their stamina and chakra pool. Naruto can fight all day
Amaterasu is the only deal here, and Naruto has shown to be very tricky with Kage bunshins.
Naruto has better allies, he can summon Gamabunta, Gamaken, Gamahiro, Ma and Pa toads, these summons are far better than Sasuke's and Danzou's (They are actually smart, and very powerful)
Sasuke isn't getting out of their sound genjutsu, fuuton rasen shuriken destroys Susanoo
Naruto makes FRS faster than Susanoo arrow, plus his SM sensing, reflexes and speed, he can easily dodge it
SM Naruto is also extremely durable. He Shattered Pain's chakra disruption blades, falling on a bed of spikes without injury, his arm not being messed up during his Rasenshuriken perfection training?
You seem to dislike Naruto and don't want to give him any feats. Naruto's defeat of Pain and Kyubi puts him above MS Sasuke.
As for Amaterasu, Naruto will see Sasuke's eye bleeding and will prep a shadow clone to take the hit. Naruto is very tricky with KB's
SM Naruto > MS Sasuke
