I have nothing to do with the story being a lie(But it certainly matters, when the story is about two great nations with a great history, also the writers and filmmakers are responsible for the accuracy of the film they made.)
When you watch the movie, you can easily see the anger, hatred and effort used to humiliate the Persians, But Now, what is the reason for doing this in the form of lies and exaggeration?
It is clear that the reason is to hide the real humiliation that they themselves suffered.😉