After the assessment yesterday I had a browse around at some of the maps available online for UT3. The online maps are far more static than the student's work, which was drawing on a different type of interactivity that can be at odds with the DM/CTF/etc gameplay. So I was just looking at visual quality for the most part, seeing the levels of refinement, attention to detail and overall atmosphere.
The images below come from the suite of maps available in the UT3 section of Map-Factory and show the kind of thing that people out there are creating. These are just uploaded maps, so they arent the mod team work, I would expect that they would have primarily been one or two people working away on them.
[UT3 maps preview images from the MapFactory site]