what exactly do you mean with ridiculous? the story which was really quite far off history at least from what the wiki article states or the equipment? I'm a total noob on Chinese non treasure fleet navy so I don't have a clue about the accuracy of the ships whereas the armor looked at least somewhat plausible(unlike goemon). The tactics did not at all look very accurate but I'm no expert on chinese military.

mhhh more movies to check, YAY!