Neji eyes were able to follow Lee 5 gate speed not his body. . That is because Byakugan has 360 field of vision unlike normal eyes 120 , so if something leaves that field with high speed normal eye wont be able to follow without moving head fast enough to catch that speed .Neji dont have those problems.
Neji reacting to 5 gate Lee is your baseless assumption. if anything manga implies different. Lee said this was meant for Neji not Gaara and Might Gai said that is key for Lee to defeat Neji.
KN0/ KN1 doesnt have any speed feats that come close to 5 gate Lee nowhere near . Sasuke too doesn´t have reaction speed feats to prove he can react to 5 Gates Lee
Gate users movements are different from rest,shunshin is for one try only,you use it and that your speed return to your normal speed.Gate user use constant high movement speed. Sasuke can maybe react to first attempt but the following attack will catch him because of constant speed movement I mentioned.
Not to mention CQC favors Lee.
Ura Renge was needed because it was the
high speed combo Lee needed to not get hit. If 5G Lee needs a high speed combo on top of his natural speed in order to land hits then it means Neji can somewhat react to Lee's regular combat speed. And even if you want to argue that it means a Neji far below himself in SRA who is comfortably below Sasuke can react to anything below that, which means 4G and below.
If CE Neji can react to 4G Lee, 5G Lee isn't blitzing SRA Neji nor is he blitzing anyone on that level of speed or above.
3-Tomoe Sasuke>SRA Neji (4 in speed)>>CE Neji (3) >CE Prelims (3).
The gap in speed between 4G and 5G isn't even noticeable enough to make that claim meanwhile the gap between Neji at the start of Part 1 and end of Part 1 is very noticeable. Feats and stats agree.
The bold is irrelevant. If Lee is launching an attack there is no dancing around him or any of that as Lee himself blatantly states. When he or anyone moving like him launches an attack at high speed there is no counter attacking at the last minute.
5G Lee can't blitz Neji so he won't blitz Sasuke.
And even if we talk speed feats. Lee's speed feats are always exaggerated by fans because of how Kishimoto draws him while moving at high speeds. :lol
Lee feats
-Blitzing Gaara.
-Being stated to be fast enough to blitz Prelims Neji w/ Ura Renge.
Naruto feats
-Blitzing the shit out of 2-Tomoe VoTE Sasuke, who was
at least on par w/ Neji during the CE, who is superior to Neji during the Prelims. If we go with an accurate measurement then 2-Tomoe Sasuke>Neji in reaction speed.
-KN1, being comfortably and noticeably faster than the same Naruto that was blitzing Sasuke who is faster than Neji.
Lee doesn't even have the feats to put him far above Naruto tbh.