No, sorry TSL has more depth in every conceivable way and the music is more atmospheric, closer to the score of something like Bram Stoker's Dracula or Batman Returns. Jeremy Soule's KOTOR has a few good themes but on the whole most is just a pale imitation of John Williams.
They are two entirely different styles. Kotor 1 is a story of drama of a grand scale, while Kotor 2 carries a sense of quiet dread and nonstop intrigue.
Personally I find Kotor 1 far more memorable and akin to what you hear the original three Star Wars films. However, the Kotor 2 music, if used appropriately, (Which I feel Obsidian kind of didn't do) carries a lot of the weight of the story and pulls you into how complex and far-reaching the consequences of being a Force wielder can really be.