This 0.5 is so specific that it literally counts the actual values of 0.5. I'd agree with you of this isn't repeated in literally the fight with Baki vs Olivia, and Yujiro vs Baki.
Those abilities are simple and different to power levels. On the first place you're comparing speed and power. We can have legitimate exact values for speed like how you get one punch man's Flashy Flash being able to move at a high amount of value.
CSR is literally called just that by the user.
0.5 has been explicitly called that by two users, and the narrator.
Edit -
https://youtu.be/6bdncEX8wNA?t=825
And an even more contradicting feat that further puts a question to the use of this ability.
https://youtu.be/6bdncEX8wNA?t=825 13:45. This is literally an anti-feat.
There are much more backings for that than this.
And what I really hold frustration with here isn't that exact value
It's saying that if two people have the exact same reactions, the user of the 0.5 seconds would win by default.
Meanwhile on the actual manga, we have showcased scenes of them using it twice or thrice, and then abandoning it completely and saying how they even ditched it by just speeding up or being ready for it.
TLDR - There are exact and very low values of the speed being used. If anything what I request is to not have the effect be wanked of it being 'unstoppable'. (Outspeeding it before it happens is impossible since in the first place you already have precog going on for Yujiro)
An anti-feat shouldn't be used to upgrade or make up stuff when it has so many things going on against it.
This is literally just Yujiro and Baki finding out a way to intercept the other's attack. Not some BS about ignoring the "thinking process" needed to act.
https://xy-06-j.*********.net/d9/eb/5be013daebbc141e9cc3be9d/16_222723_800_1301.jpeg