The interior of a Rubik's Super Cube is very similar to a Rubik's Pocket Cube. However, the Sheen 2x2x2, which Andreas sells, is something different. I have not been able to open it. I would love to see a pic of one. Here is a photo of the three sizes of 2x2x2s: Sheen is in the middle:
The Sheen cube has a really nice mechanism. It turns smoothly, and even it you stretch it and abuse it, like I did trying to disassemble it, it works well.