Nowhere does it say Superman can fight faster than light, it's never been proven. I even remember reading that Superman can't go beyond light speed within a planet's atmosphere, now I know the popular Superman supporters answer to this one, he will cause atmospheric chaos, which we all know it hasn't been proven either. Sonic booms can't cause atmospheric chaos even real scientists say that. They say only extreme temperatures can and we have never seen Superman control the weather so there goes that claim of he will cause atmospheric chaos. Never seen Superman fight around the Earth at fast speeds, now you're going to talk about that scan where it shows him in arizona and china and all those places. It doesn't prove anything where does it show the time frame making speculations about just because it was all on one page doesn't prove any time frame, it would be like me taking pictures of myself being at all these different places and putting them on one page does that prove to everyone that I'm really fast because I was in all those places just because I listed them and put them on one page?
Superman has never taken blasts any where near that of what Goku can dish out. Sun eater, he wasn't even near it, megadon war head there was no explosion, he absorb the energy. It said if it exploded it would take half the galaxy did anyone see an explosion in that scan?
Superman died from punches nowhere near the power of Goku's so explain that.
IT is very effective in battles, we've seen him use it against Cell and Buu and it worked both times causing them tremendous damages. If it wasn't for their regeneration abilities they would of been screwed. Superman can hear Dooms Day's heart beat so explain why he still got own, it proves his reaction time is not that great. Remember Dooms Day is slower than him.