What the fùck. This is what they call burden of proof fallacy. Debating doesn't work this way, that's like telling me to give you evidence that Sasuke can blitz some genin I've never heard of, despite him having no impressive speed/reaction feats. Give me a feat of his reaction speed, striking speed or movement speed and then we're talking. Till then it's a moot point.
We've been over your misuse of the burden of proof fallacy. If you want to assert something as true, then you have a burden of proof to support your assertion with an argument whether it be Sasuke can blitz that gennin or sasuke can't blitz that gennin. You're not fulfilling that burden of proof, you're saying that because i can't show that Sasuke can't blitz the gennin via speed feats, then sasuke blitzes that gennin which is the equivalent of saying "prove me wrong, else I'm right". If we don't have speed feats to compare, then we can't compare the characters via speed feats, else you could do the reverse of what you're saying and say that before kaguya had any speed feats, chapter 1 naruto blitzes her because he has speed feats.
So if we can't compare the characters via speed feats, we compare them via hype or general level since a comparison that's not as accurate is still far better than one that's outright fallacious.
I never said he was as fast as Ay now did I? I said he was keeping up with v1 Ay, meaning he's comparable. Unless you want to disprove me, then there's not much to argue here, his v2 is in its own league, his v1 isn't close to as impressive. Byakugan boosts reactions? Since when? It has no pre-cog, so Sasuke still blitzes until you can prove otherwise. Sasuke was far quicker than Deidara in Hebi, Deidara was quicker than Gaara's sand when he was still a Jinchuriki, I can't see how you came to the conclusion that MS Sasuke can't blitz Hiashi. Not to mention, Aoda busts through any Kaiten at this point.
Sasuke's speed isn't comparable to Ei's speed just like SM Naruto's speed isn't comparable to sandaime raikage's speed. Both are able to blitz their opponents because of their super reactions as shown when sasuke fought naruto at VoTe
Anything that gives you a greater perception of the external world will boost your reactions, why do you think sensors have boosted reactions, why do you think pain's share vision gave him boosted reactions?
Deidara never engaged gaara's sand while on the ground, it was all in flight, and he actually wasn't faster than the sand considering he had to blow himself up to escape and lost an arm.