Wha ? That screen sucks, Borys. And I am a PC fanatic (but only while my PC is up-to-date, hehe). There are better Quake 4 screens than that, jungle setting < city.
By the Way, I don't really get how this will be sold - Will it be free like Enemy Territory or will it be a normal full price game ?
If you think this game looks bad you need to look at the E3 trailer, you get a better idea of how everything is going to play out, better then these screenshots show.