Originally posted by darthgooberSuperman wasn't as fast back then, and Deathstroke is really fast. You gotta remember that right after the reboot, even Flash had difficulties with sound speeds. Even Wally has had trouble keeping up with Deathstroke in urban environment.
How is it not comparable to be unable to catch(or even keep sight of) someone a billion times slower than you are?
And he wasn't unable to catch him, he caught him.