Superman is very powerful so this will likely be a controversial match, but it’s been a while since I had one of those. Saber’s noble phantasm has enough power to deal major damage to the Man of Steel and her speed is enough so that she will be able to keep up with him. Superman may be able to eradicate solar systems and he is faster than light, but Saber has her sword skills and I believe that Excalibur could definitely pierce through Superman’s defenses. Saber’s short range movement speed is incredible and she would be able to dodge Superman as his combat speed isn’t quite up to par. After a few solid hits, Saber would claim victory. Saber wins.