Hmm, that is true. What about the compression, though?
Basically these:
Wouldn't a direct, photoshopped image, have tons of artifacts, but a screenshot of a photoshop image NOT have the artifacts?
He could load the "new" image on the 3ds and take a picture of it and it would have no artifacts right?
A low res off-screen shot is going to have fewer artifacts because you don't have to tamper with an image of a screen that you've loaded a fake image on, as long as it's a lower quality shot.
I'm not saying that this is a direct confirmation or denial of anything, just that none of that is damning.