I would say that Uematsu is the more masterful of the two, but I will also say this:

I absolutely adore the musical score given for Morrowind and Oblivion. I have listened to these two soundtracks more often than that of Nobuo's soundtracks.


So, in short, I personally enjoy Soule more, simply because of my adoration of the tracks found in Morrowind and Oblivion. However, Nubuo is the more masterful, though Jeremy may yet become as skilled as Nubuo, but that lies in futures and questions I cannot discern.