If superfetch explains that, than surely anyone with 4GB can replicate the performance within a factor of two or three. Can anybody with Vista replicate that? (I don't have Vista and have never used it, so I have no idea, though honestly, if Vista is superfetching 53 programs I'd be a little annoyed.)

Fragmentation test... well, it is a marketing video, after all. The real question is "why defragment an SSD at all?"