Nintendo has a habit of being especially uptight about the press' use of imagery from E3. Nintendo sent a message along with the screenshots they distributed at the show, stating that the enclosed images were "prioritized", and that magazines and blogs like ourselves should try to use the higher rated images if you had to choose.
One problem, now that they've rated them, I have a compulsive need to know: "what makes the low-rated images so bad?" Looking at them, there doesn't seem to be anything wrong with these screenshots, per se. Though the higher rated ones are often more action-packed or well timed.
Starting with Kid Icarus: Uprising up there, here are the best and worst of Nintendo's E3 2011 screenshots. Do you think that one is really that much better than the other?
Fortune Street
Kirby Mass Attack
Kirby Wii
Luigi's Mansion 2
Super Mario 3DS
Mario Kart 3DS
Paper Mario 3DS
Animal Crossing 3DS
Legend of Zelda: Skyward Sword
Star Fox 64: 3D