Wrong, if he used his shunshin Naruto would have dodged.Don't use capitals on me if you don't even understand what i'm posting.
S/T is an instant jutsu, but sasuke didn't use with his susano, he just used his susano's normal speed to speedblitz naruto, wich was possible blecause his susano was a pseudo super juubi jin, that's why it could move at super speed.
Sasuke didn't use amenotjikara on his susano.
Naruto reacts as fast as Sasuke uses his Ameno
You must be registered for see images
Naruto's reaction speed is fast enough to keep up with his S/t hence why he used fireball jutsu to distract him. Claiming Sasuke used his foot speed is like saying he's faster than Kaguya's S/t.