supes has to slow down to do the infinite mass punch (user goes at light speed and punches someone) even. i mean he's not miracleman, black adam, or captain marvel so it doesn't exactly matter there, but yeah, he's easily faster, stronger, and tankier than captain marvel or black adam, but he isn't ruthless, which holds him back. i know very little on miracleman so can't be of use to that one.
that said i'm also not sure where the idea was that master spark was light speed either. <_<;
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The King Wang.
Listen up Urinal Cake. I already have something that tells me if I'm too drunk when I pee on it: My friends. - Colbert.