why even compare the two? Different universes, different visions of the path that mankind has taken in discovering his place in the universe.
Star Wars is the idyllic struggle between good and evil and is more like a fairy tale. It's overarching story line is the redemption of a young boy's father.
Star Trek is all about overcoming the messiness of human history and the line that separates good and evil is a lot more blurred.
I love them both, equally.
and, Firefly does indeed rock.