JND really do some strange and outlandish things, don't they?
In the comparison Diostar posted it looks to me like they've deliberately restyled the hair on the prototype to look as goofy and bouffy as possible, to make the final product look better by comparison. But the original prototype pictures didn't look like that. Did they think no one would notice?
Here's a picture of the actual prototype.
Compare that to the pictures of the "prototype" on the left below...
It seems that they've just teased the hair out to make their own prototype hair-rooting look like crap, and make the production piece look like an amazing improvement. But it's... er... not exactly subtle, is it? Why are they like this?