I think that the graphics are correct for this game, and splendid if you compare it to the average wargame. Yes Rome Total War has better graphics but they also had tons of well paid artists on it
I just have one reproach to make about the screenshots and especially movies: I don't know who's making the movies but all we get is closeups on the units which in my opinion is a mistake. First, because the units don't look as good as say Imperial Glory, and second because the game is not about that! It's not about counting the hairs in a Grenadier mustache, it's about big units of men moving and fighting together. So you are desserving yourself by putting the emphasis on some of your weaknesses and not showing your strengths.
Man, if you could show us a nice charge of Imperial Cuirassiers against a strong English square in a bird's eye view movie, you'd see a lot of people give up on other games and turning their attention to LG!
So give us huge armies (Lord of the Rings syndrom), lotsa smoke, lotsa action!