But truth being told, those are all elite gamers who play A LOT !!!! Are used to the commands to the point where everythings is almost an automatic reflex, and massacre a lot a casual gamers, who try their best, but often end up owned, horribly.
For fun's sake, I made a recording of one of my games, it's not one of my best, but it's representive for how easy you die (mostly instantly, watch close!), and how horribly hard it is to aim straight (yes my aiming is absolutely horrible).
I am actually used to play on console, where (If there is no lag), a "20 kill - 5 death" score is pretty much my average. Playstation also seems to be a lot better paced, movement is really noticeably faster, YES IT IS, you can realy move about twice as fast on console compared to PC (both with mobility III), it's crazy.
The big difference are off course the graphics, on PC I play with everything maxed out, it's just real eye-candy, but gameplay is much more fun on console, despite the horrible amount of aliasing (jagged edges).