The survivors of the cataclysm that brought their advanced knowledge to the ancient peoples is the super race.
Yes, if those people are technologically so advanced as to be indistinguishable from wizards. In Graham Hancocks mythology, these people brought the secrets of agriculture and advanced maths to indigenous peoples around the world. A lot of his evidence for this comes from ancient religious texts and artifacts. So, if these people are so advanced that they are worshiped by the natives I think it’s fair to say he is describing a super race.