Derrkater found this and posted it on the unofficial discord, I took the liberty to post it here and have an official answer from Modiphius team
So the victory conditions state that you gain 3 VPs if there’s no adversary models within 3’’ of the Stone and at least one player model, and 1 VP if there’s an equal number of adversaries and player models.
But what happens if there’s more player models than adversaries models? No VP is gain?