Hi,
I think your question as the answer: the word "match". Lightroom tries to match the camera color profiles. It's a match, done by comparing outputs. It's a little "guessy" although I think it does a nice job but not a perfect one. If you want to fully enjoy the color profiles from the camera you should either shoot in JPG or develop the raw in-camera, at least until fuji releases some (real) software the uses the same algorithms to create the color profiles. Until lightroom 4, color matching in lightroom was just awful, now it's way better but will never be perfect for closed file formats like canon's, fuji's, nikon's, etc.
BTW, does anyone feils like lightroom CC is way faster in rendering the fuji raws than it's previous version?
Ciao.