I recently purchased a Blu Ray player and some discs.. This is the first time i'm seeing or noticing some discs like Spider Man 3 and Donnie Brasco have FULL 1080 listed on the back as well as 1080P listed in the specs. However, the picture is sooo much clearer than a disc that does not say it's FULL 1080.. Anyone know the difference? Why the picture seems to be so much better? I thought all 1080P resolution should produce the same picture quality?