Pardon me if I'm missing something because I can't view the video, but unless it says otherwise why does this have to be Atom at all? There are Sandy Bridge and Ivy Bridge tablets. There's no quad core Atom available, period, and I doubt this guy has a preview tablet for a platform not coming out until the end of the year.
The link is working fine for me, but the user name on youtube is "mobimodder". All the link says is "Android for Intel build rabbit rom rooted", so you could definitely be right about an existing tablet. The Antutu score is ~ 46k.