I'm a storyteller from Vampire v20, and there, vampires reduce bashing damage (that is, the equivalent for superficial damage in v5) because they are undead. But if I understand v5 rules right, superficial damage is halved almost every time, even if you are not. Is that true? Or do only undead halve their damage?
Yes, superficial damage is halved in V5 for mortals and vampires alike. (p.126) This replaces what used to be handled by the soak roll.