User blog comment:Gifist8/Who Is Your Favorite Main Villian/@comment-28458080-20160907200811/@comment-3423279-20160908162846

Of course Imperiex, the guy who couldn't react to the Speedster moving at Mach 2, maybe Mach 3.3, would be able to instantly defeat the guy running at Mach 6-8.

Because if one cannot react to something moving at a slower speed of course you could react to the thing moving at a way higher speed, like how humans can dodge sniper bullets with ease and are unable to do anything about bows and arrows.