The song is very solid...except for the dubstep parts. And I like some dubstep, so it's not like I'm trashing on dubstep. But it's just thrown in, and whenever it's in there, it drowns out the rest of the music. It might've worked near the end if he turned down the volume of the wub, but it felt a little offkey during the wubs as well.
Like Emunator recommended, if you're going to go with this style, learn how to use that automation a ton better. Dubstep (in particular wobbling the bass) is incredibly generic at base value, not to mention kind of ugly.
If you want to examine some dubstep mixing that, in my opinion, does a good job combining dubstep with not dubstep, check out some of the things DJ Alex S has done. He's been a surprise favorite of mine lately, as he is able to throw in the wobble in a way that is very non-confrontational, which adds a ton to the accessibility of it (before it gets too overwhelming for most people to stand).
(and yes, most of his songs relate to ponies. But guess what: that's why it's a perfect example...he found a timbre of vocals that could compete with the low harsh frequencies)