Differences Between The Two Genres

The differences between these two genres; being a Historical Account ( Herodotus The Histories) and '300' a Historical Fantasy are that obviously one is historically influenced and accurate while historical fantasy is historically influenced (to a degree) and usually historical accuracy is not a high priority. Obviously, we're talking about a comic book adaptation here, not a historical text. And in spite of all its inaccuracies the film adequately captures the essence of the battle more so than the reality.
 Zack Snyder explains to a degree how and why '300' is a Historical Fantasy.
 "As historians, I can't be emotional with what I feel about the Spartans because I'm trying to give historical reference. But you, what you've made,feels like it was made by Spartans."