I actually does sound bad to me. There is no real feedback. You swinging some cut down club that makes no connection to the ball, the swing weight has to be way off, without the feeling of flex or lag. All this is going to do it allow you to play a video game using a "swing-like" motion. If this is all you want, then there you go...drink and be marry. If you are looking for something to "help" your swing, I contend this will not only be completly different, but actually do detrimate to your real swing.
Look at some other systems if you want real feedback. Take a look here, this is also new but in my first look will provide the right kind of feedback needed to actually help the swing, while giving you the fun of a game.
www.dancindogg.com