not necessarily. couldnt they have it so when you hit the d-pad, it sends the same signal as every other psp? someone correct me if im wrong.
the screen has a wider color pallet, with deeper colors. you can turn it off to. it really doesnt reduce glare outside. I did notice that when i play inside, the glare from windows is less noticable, and i can even play with the lights in the room on, which used to annoy me.