The reactions of Harker and Lowengren were just as fast as Seeker's in this world.
In a realm governed not by flesh but by intention and rule-sets, speed was no longer measured by distance alone. It was measured by awareness. Their minds operated on layers beyond normal perception, each thought branching into predictions, corrections, and counter-movements before a physical action ever manifested.
Their perception could slow down to such an incredible degree that evading attacks from beams and such was easy.
In that stretched perception, beams were no longer flashes of light but crawling streams of energy. The trajectory of every attack unfolded like a map before their eyes, every deviation visible, every flaw exposed. Dodging was instinctual and almost boring.
As such, all three of them needed to utilize tactics and movements that would force their opponents to be struck.
