See how the center just whirls around? I think this looks a LOT better than having a bunch of seams meeting in the middle. Seems to me that no matter how well done a star is, you can still tell where the vertical and horizontal seams are through the middle.
Plus, there really isn't a matching of points in the middle (which never quite works out for me), they just overlap all around. You iron the seams all in one direction.