Game Movie Intro vs Actual Game Play

I'm looking at this ad for World of Warcraft (great ad by the way), and I'm so impressed by the graphics and level of detail that's been put into it...to get your attention and everything.  So I'm hooked by now.  Well when you go to open the game, where does all of the over-the-top cinematics go?  Am I the only one that has an issue with this?

Not to complain or anything, but this has got to be a serious pet peeve I have with video games.  Developers put all of this talent into the into, and then the game itself isn't quite so aw inspiring.  Believe me, not that I'm a developer myself, but I have a very good understanding of what goes into the game, and stuff like this is a bit of a disappointment.  There's a disconnect between intro and actual show - kind of like you're at the Christmas tree opening a present that's in the shape of a video game you've been eyeing but it turns out to be some book.

This was more of an issue in the past than in the present with more powerful consoles / PCs, but it's still here and I think should be dealt with. If anything, I'd like to see either the gameplay graphics amped up or the intro movie dumbed down.  Good example, God of War.  The intro is just as powerful as the gameplay itself, something that's continuous throughout the game.