Yes thats the battle I was referring to, and though they did lose eventually, they did hold off the Persian fleet for a couple of days and inflicted heavy losses on the fleet before being forced to retreat after the pass was taken.

I need to read the comic book as well, but from what I have read, the director followed the comic book almost exactly, so I think thatit is a case of the comic book being innacurate thereby making the movie inaccurate.

It would be really great to see someone give this battle the treatment it deserves and make it more historically accurate, oh well probably never happen.