Those are horrible I really hope that was someone intentionally taking a bad pick with the 920 to make the Iphone 5 look better. If that really is the quality of the camera bye bye W8 and hello to a nexus 4.
This is why professional reviewers have standardized lightboxes and objective tests so the skill of the photographer doesn't come into question. Knowing a lot about photography makes a huge difference in how pictures come out.