Oh, and I really don't think people will equate the mighty superpower of the US armed forces as underdogs battling against hoards of heathens and use this film as a battle cry. The people dumb enough to think that way will just think the film is gay (gay Hollywood propaganda even, despite the 'boy-lovers' statement), given all the over-the-top bared man flesh of EU and Australian actors. The film quality isn't quite low-brow enough to make it a war allegory for the masses.

They do make it plain that Xerxes's forces had warriors from just about every place he'd conquered, so while it would've been better to have had some good looking, fit white faces, I don't think Xerxes's troupes are seen as representative of other races collectively.