Unreal Tournament!!!
Quake 3
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Positives
- Has a superior GFX engine by far, UT's engine looks dated compared to it
- GFX engine with full detail on is much faster, smoother and more consitent in FPS
- Diverse range of characters to choose from
- Deathmatch games are fairly decent
Negatives
- Maps are in general crap
- CTF in my opinion sucks in Q3, maybe the Team Arena add-on will change my mind.
- In a lot of cases I find the maps to dark in a number of areas
- Lack of weapon variety, what happened to the old BFG?

- I find that the guns kill you too quickly, the damage should be reduced.
Unreal Tournament
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Positives
- Excellent gameplay with a wide variety of different types of game, eg. Domination, DeathMatch, CTF, Assault etc.
- The Translocator, I feel naked without it

- Lots of weapons to use.
- Audio Taunts etc. I don't think I could ever go back to a game without audio taunting and other audio stuff.
Negatives
- GFX engine looks a little dated and struggles in open / complex areas.
I think that is about it...