Really, if you love your EBA so much, then play it. Seriously, Just Dance? That is definitely not the best David Bowie song. I love EBA but I hate people who hate something new just because it's not the same game. It's like Zelda 2. It wasn't a bad game, but people hated it because it was different.
And for those that say the Michael did not approve of it, the development of the game already started before his death, it actually started close to when the tour was announced. It's not an EBA rip-off, just using the same game mechanics don't make it a rip-off. If it's the same way that you say, then Rock Band would be a rip-off of a lot of music games, but it simply took the games and made it even more fun together. This is like the same way, it takes EBA's form and adds amazing tracks.
How again can people tell it's terrible? How does it look terrible exactly? I don't think it does. It looks like EBA. With MJ. EBA + MJ = Win.