I have to agree with the source usage. The dubstep part seems a bit too liberal.
I would say the snare for the dubstep part could shine a tiny bit more in the high. And yes the bass is treblely. Too much highness on the bass itself.
For myself, the lead is ok like that. I don't think it need tweaking. But it's a matter of taste.
Also timaeus222 already said it, but you copy pasted the dubstep part.
For the rest, it is a great song. I enjoyed! Continue your hard work.