I don't think that there is a mistake. The face is 1 over 1 (1 thread over 1 thread) if you are stitching on linen. There is a 2 over 2 alternate face available on www.tiag.com which you can download. If you are stitching on aida the 2 over 2 face is the one you want. The pattern is
L & L 39 Angel of Christmas and the link for the alternate hands and face is there.