Doomsday killed Superman with his fist because he was stronger and nearly as fast as him. He wore him down until his bio field copped out.
As soon as Yoda becomes stronger than Superman and swings a couple thousand times a second, I'll give that to you.
Originally posted by Darth L. Dipsit
Can Superman go "at the speed of light" as people are claiming? No offense meant, it's just that I thought it was always quantified as "faster than a speeding bullet," and I always interpreted that to mean not infinitely faster than a bullet, which the speed of light (3 x 10^8 m/s) is. If Superman can travel at lightspeed he can, theoretically, become pure energy, which takes this whole fight to another level.
He can't go as fast as light but he can hit a very high percentage of it.