@OfficialRikudouSennin: There's nothing to estimate other then it looks like lightning. That would have been a logical argument, however the series has explicitly stated chakra-made artificial lightning is nowhere near as fast and as strong as real lightning such as Sasuke's Kirin which Itachi, who should be as strong or stronger then the Sasuke that fought A, was completely helpless in dodging and could only prepare Susano'o ahead of time. All A's Lightning Armour does is give a significant boost to his muscles and nerves to go at their absolute limit. C'mon, the Rikudou Senin himself should know all his jutsu XD
Itachi died because he was weak and if susanoo can easily deflect lightning then?
and A at close range dodged Amaterasu where the guy behind him couldn't sense+react
*Rikudou Sennin and its Hagoromo Otsutsuki
Naruto has speed also doesnt change the fact here until someone gives valid reasons because current Naruto curpstomps jio.
That's the only reason Itachi lost, hence why Itachis stronger, your point? Susano'o didnt delfect it, it merely partially tanked the Kirin enough so Itachi wouldnt be instantly turned to charcoal. A dodging Amaterasu still has nothing that implies lightning speed, just that he's faster then other less fortunate ninjas. There've been plenty of explained reasons that you can scroll through and read in this thread on why Jio takes this with the first page alone, you just choose to ignore them. And even if A was "lightning speed" and thus Naruto, lighting in itself varies tremendously and unless we assume the highest end speed calcs of lightning, it doesnt come near Relativistic speed laser dodging. So far nothing you've said proves A is even Lightning speed at all, so forget about even trying to use those high end calcs. Real lightning >>>>>>>>>>>>>> chakra-made psuedo-lightning as stated in the series. Oh and I know your names Hagoromo, but I like calling you Rikudou Sennin :)
Minato speed Vs Ay Speed i want you to calculate that and also here
Lightning speed calcs added.
Also Speed isnt winning as naruto is also fast in his own right.