I don't know why everyone ignores the fact that
1) While Garou was running towards the helicopter to save it from the SS, Bat reached the centipede earlier. In the helicopter is Tareo, whom Garou definitely wants to save. We have no reason to believe that he ran there at an imposing pace and chill. He does not even have time to finish, as the Bat enters the game.
2) Bat overtakes the antennae of the Centipede, covering a greater distance. Obviously, this tendril is faster than regular SS strikes. Moreover, Bat covered a greater distance in the asme time.
3) Bat reacts to Garou's serious attack, although it freezes for a second later. He does it literally before the impact. His speed and reaction must be at least FTL