And a red star from main series is likely to be 100-1000 weaker in luminosity than the Sun, unless it's a red giant(in which case it is not in the main series, of course). It is unknown how Superman's powers would behave outside Earth, as it has been stated that they do not have such powers in Krypton. Since Superman's powers do not have a solid scientific foundation and are thus unpredictable, I'll refer to my original response to the post for the outcome of the fight. The author gets to postulate much.