I know man, geek-gasm.
Its those stupid Jedi holding technology back. Peaceful guardians bah. I always play the Sith in these games. That trailer looked really good, and would have made a great scene for a movie.
I've always chalked up the stangant tech to the wars. With the Jedi and Sith basically taking genocidal shots at each other every few hundred years tech in the galaxy keeps getting knocked back as planets and civlizations are wiped out over and again. Not to mention probably a certain amount of, at least at first, deliberate retardation of tech of Sith orgins but could still be useful to the general populace.