It looks like it has some funny parts, but how did you get iron giant out of it? It looks more like an animated version of "League of Extraordinary Gentleman". They take all the campy scary movie classics from the 50s-70s and put them all in one movie to battle the giant alien. The opening sequence of the trailer was a little overdone in my mind.

Other than that, like I said, it looks like it has some funny parts, but everything else looks like it's overdone. Typical DreamWorks fare as far as I can tell.