Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-4961229-20200406200150

FlatZone wrote: Again Itachi saw nothing but a blurry spec and that would be Sasuke, Itachi then sees the sky get brighter. Where are you getting this that Itachi saw nothing but a blurry spec? The manga only shows one instance that I can see from Itachi's point of view of Itachi having double vision. He grabs his head and it soon clears up and he can see Sasuke just fine. Point out the chapter you're talking about where he can only see a blurry spec.

Itachi even states after Sasuke says Kirin will be his last jutsu that he can see that he's out of chakra. If he can see, that Sasuke is low on chakra, then he can see the Chidori chakra around Sasuke's hand as it drops to cast the jutsu. It would be like you seeing a silhouette in the dark holding a flashlight. All Itachi is reacting to is Sasuke's movements, the same way all Susanoo users react to their opponents. Nothing special about that.

That said, Itachi is pretty fast. I would put him midway between the 4th Raikage and MS Sasuke, like others on this page. Basically, he's a little bit faster than Kakashi.