Maybe; maybe not. I work as a projectionist and screen literally hundreds of trailers, and after seeing as many as I have, you get a pretty good idea for what movies will suck, and which ones won't. I'm almost willing to go out on a limb and say that the Ep III trailer was uninspiring, but not quite; it just paled in comparison to its immediate company (Pixar's Cars trailer, which looks gorgeous AND funny).