Being able to refrain from murder, rape, theft is such a low ethical bar, clearing it should not even earn one a pat of the back.
What was unique about the Hebrew Bible and the gospels of the New Testament in the ancient world was an abiding concern with social justice, with the welfare of the poor, sick, and oppressed.
I've read Plato, Aristotle, Homer, Confucius, Bhudda, Laozi, the Bhagavad Gita and while there is a lot of wisdom about personal self fulfillment and cultivation of virtue, there is no abiding ideology concerning social justice and social inequality the way it is presented in the prophets of the OT and in the NT.
That's not to say any of these ancient texts are superior to the others. I think my personal favorite is the Dhammapada. But it is not correct to say everyone had pretty much exactly the same program concerning the purpose of a just and authentic life.