Problem is, it's under glass. Unless you use a polarizer you'll get a lot of false positives for points of correspondence. Photogrammetry would require a whole lot of very properly lit images as well. From a technical standpoint their story doesn't line up at all with my experiences with either photogrammetry or capturing 3d data with the Kinect.

As Best I think they had somebody do a hand-sculpted 3d sculpt using z-brush, maybe nominally based on the photos and lot rez scan data.