Not dub, or brostep, or chillstep, or anything related, in the slightest. Far more of a techno/fusion piece, at least with this site's genre listings.

Overall, though, the mastering is quite nice. The synth you used in the 'drop', though, did feel quite raw compared to everything else, and considering that everything else didn't really change their feel/tone (drums, melody, etc.), it really felt out of place. The mastering, like I said, is nicely done. The volumes of everything match very nicely. The beat is also quite nice, very ambient.

The composition itself is a little lacking, for me. Not quite my tastes. That I won't mark you down for, though, since that would be biased.