The arc controller would still cost more money to use, and mere promises of better motion control doesn't mean it will be (as in even if the specs are higher, programming is still important).
And why should the graphics really matter when you have your own lightsaber? The actual saber is just a glow effect, and it's not as though Lucastarts graphics are that impressive even in HD. Plus the resolution won't matter in terms of the gameplay.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs