Someone knows his Viking Mythology, eh?
But anyway where the hell does Superman travel that fast I mean I read comics only for 8 years now but I never saw him travel at the speed of light and I remember him keeping up with Barry Allen on some kind of Race but that sure wasn't anywhere near the speed of light, maybe he can reach that in space (even though I doubt it) but he never seems to use it to knock oput the Doomsdays, oh well maybe he can do it and just doesn't know about it he doesn't seem to be that bright anyway. But still you Thor is fast too and mos of his attacks are magical which is a big problem for Supes so I think he could take him.
And don't we talk in this forum to discuss our opinion if we only say but in a comic someone beat the other we could just close the forum, And c'mon Storm beat Wonder Woman, Wolverine beat Lobo, comic authors are not infailible.
Oh and maybe you refer to Stargate were they say the Asgards are Aliens and Thor is one of their Commanders (possible eved though that is not a marvel comic if I recall right)