Well, to be honest, the trailer flat out sucked. If there wasn't the words "Titans. Will. Clash" near the end of it, who the hell would know?
To me it's a failure of marketing 101. I understand it's a teaser trailer, but it really, really, really, really failed on all fronts. The music, the quick cutting...
Christ, it looked like a Roland Emerich doomsday movie the way it did nothing but show off special effects. It's the equivalent of cinematic porn - show everything up front and leave nothing to the imagination or discovery.
Foreplay. That's what teasers should be about. That's why they call them "teasers". This didn't tease me at all. It assaulted my senses, and looked like some hybrid 300/Dragonheart movie.