It's a nice song and all, but definitely NOT dubstep. This should have been categorized under electro. Now for some input:
GOOD...
Decent overall sounds, played on 3 separate speakers (earbuds, computer speakers, and surround sound) and could hear all elements of the song clearly.
BAD...
There was no variation in the song, meaning it was very droning. Unless this was how it was meant to sound, I would suggest adding in a main synth lead, guitar lead, something to give it a bit of OOMPH!!