Heh, I think kind of the opposite. Mitsuda is more consistently appealing to me, but the stuff of Uematsu's that I like the most, I like more than anything by Mitsuda even if overall I prefer Mitsuda.
I actually thought this after I posted it, I don't listen to much of anything by mitsuda and think "I dislike this" where some of uematsu's soundtracks do have that, FFIX probably being the worst.