Summary: is simply the result of higher contrast and color saturation, not due to any kind of next-gen magic. Just have a look at what the XBox version looks like with contrast and saturation fixed: http://pingus.seul.org/~grumbel/tmp/ninjagaiden_xbox_vs_ps... The higher resolution still shows, but the overall image impression is very similar and not such a night vs day thing as in the
Image Dimensions: 1279 x 1440
Image originally found here.