>the Latin dictum "vae victis" was embraced throughout modern times.
Indeed, but that was and will always going to be (including in modern times).
What Christianity did was shape a morality where this was increasingly considered bad (as opposed to "just the way of the world"), not shape a world where this was eliminated.
This has a large effect on many practices and beliefs.
Yes, you're absolutely right -- except maybe for the part of "most modern morality"... the Latin dictum "vae victis" was embraced throughout modern times.
That said, having the victim come back from the dead is kind of cheating.