The clip clearly hasn't been put through the post production process. It way to dark, and sounds are missing.
But even with that, the clip is still disappointing. I know that this isn't the clip they originally wanted to show, but it doesn't make me want to go see the film like the Saw III clip shown at last year's Comic Con.
I'm still going to see the film, I'm a Saw fan, but this clip is no where near as exciting as last year's. I guess we'll just have to wait and see.