Really? Look close at it and you'll see it's a mess all over the place. Here's a zoom in on the head and neck with the 3D viewport 
It's like that all over, it's been scanned in and stitched together but not cleaned up anymore than whatever program he's used has done (IMO). Have a look closely with the 3D view and you'll see all the stitched together bits of photo and messed up model. It's only really effective if you look at it from a certain angle, but then a photo would have served the same purpose.