Needs more triplets in wubs, like slow triplets, like the one at ~0:55However, otherwise, very good.
If this is considered big wubs, then the dubstep I've heard is heavy metal. It's why I don't/didn't like dubstep in the first place. I like the keyboard/electronic derp sounds.
Edit: It's nice, but still a little bland. Also, the transition is a little bit obvious that there was a time lapse in the creation. Possibly add an effect that spans through both parts?