 Not only is he able to run backward and match Clark's top speed, but is able to run fast enough that Clark, even moving at top speed, cannot follow his movements.Their mutual respect made it apparent that they had become friends towards the end (as Superman and Flash are good friends in the future), with allusions being made to forming a "league" one day.It is mentioned that he got his powers through an accident, rather than genetics as in the comics, although at least one of the Flashes has gotten his powers through an accident.