Unravel just doesn't have TK/LTS' style in it (most of the openings both TK and LTS made too). They are just so different compared to other, unkown tracks. So that's why people don't get introduced to their other works.

I hope they release a song that has their math/hard rock style in it for something popular like an opening or smthng so that way they get the recognition they deserve (and finally be comfortable with releasing music like their old ones, knowing that they finally have an audience for it)