tagging impulse when he stopped for a second looking for ppl in a fire slade shot him while he was distracted..
fighting with impulse slade was getting hammered but impulse wasnt moving at mach speed just fast enough to hammer him without killing him.. he was also talking so must be below mach 1 then slade regain the advantage with a surprise attack using the knife as a distraction impulse twisted out of the way but was still kicked from an incoming attack..
also not enough of a speed feat to give him an advantage when X23 can tank those attacks and would be stun for follow up attacks