*upon closer inspection*
the white one is definitely fake (you can see the tape lines), but the black one I can see a power light and the side is way too smooth to be cardboard (glossy cardboard will give a wavy reflection, not a mirror-flat one like that)
If you look closely at the disc, you will notice two things:
1: it has a greenish tint that the rest of the picture doesn't, this means that it is a blank or burned CD (Wii games will be on DVD0
2: in all the pics I've seen of real Wii's, the disc has gone in the other direction (with the label side facing towards the buttons, which I think would be upside down if you displayed the console horizontally)
Thinking about that second part, is it possible that our image of the horizontal Wii has been upside down the whole time, not the disc?