Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-34656247-20200303004704

Speed lines (which was used) gives the impression of speed, the speed lines were followed by a panel of symbols indicating 3 hits (confirmed by the anime), which is what a blitz is all about. 3 opponents, + speed + 3 hits, + 3 opponents down. Even though you won't accept it, he still easily took down 3 opponents with precog whilst holding back and as seen in the Naruto vs Sasuke battle in part 1, Sasuke's 3 tomoe sharingan could predict the movements of kyubbi Naruto, the uchiha's getting oneshotted means that Itachi had to simply be moving faster than that Naruto. Feat.

Also Itachi had 13 wins against Shisui when they were sparring, Shisui is renowned for his speed ,that is also a speed feat in itself ,but no proceed to downplay.