nd: Sorry, but you're wrong there. For one thing, the skills are completely different since there's no respawn in CS and tactics are fairly non-existent in Q3. For another, though this may not be true anymore, CS players on a whole are much better than the average Q3 player -- take a look at just about any Q3 DM server where it's easy as hell to dominate. Better players stick to the CTF servers but even then the competition isn't as good as CS. I have seen MANY more excellent FPS players in CS than in Q3, and the skill difference between a vet and a newbie is glaringly apparent in CS whereas in Q3 newbies can take out vets fairly well with some luck.
Hell, give any moron a BFG and they can wrack up a load of kills. There's no analog in CS since it takes even a little skill to use the sniper rifles.
UT, OTOH, does have much more opportunity for skill than Q3 given the variety of weapons though I'm not sure it's as demanding as CS since tactics are not as important. Q3 is fun for what it is, relatively mindless, but it's not as demanding as CS. If you think so, why don't you head over to Neo's server and see how you do then we can testify to your l33t-ness.