1) I only slammed HL2 out of love. The GAME itself is incredible (one of the best FPS games ever made)...but its release was a massive clusterf*ck * 10. They eventually took care of the problems, but there were so many technical problems early on. Same for Dark Messiah, actually (do you really even think DM is a good game?). It was a bit unfair to imply that all PC games are plagued with such issues, however. FEAR was a little different, in that it looks great in some ways and terrible in others. I do not believe that any of these three games can match the best available on XBOX360 (such as Gears), but...Borys said:FEAR and HL2 to begin with, dark. Dark Messiah. But I admit I kinda went overboard with the "dozen" number.
STALKER's visuals are pretty much outdated. I am a big PC whore and I don't see anything worth in those screens. 3 years ago STALKER looked like nothing else, 2 years ago it was still "oh shit", even one year ago it still looked hot (nightshots with barrels on fire). Now it's meh, just like countless other no-name FPSes from Europe (Bloodsport, Stalin Subway etc.).
2) ...outside of Dark Messiah, these are older games. FEAR is 2005 and HL2 was a 2004 release. What did you expect me to say? Next generation PC games look insane, but they aren't here yet.
3) Stalker looks more impressive than any of those games you listed, technically and (excluding HL2 - which is compares favorably with) artistically speaking. Even in the face of more technically impressive titles, however, surely the art direction and design stand out. Those are some beautiful looking areas. The attention to detail remains impressive (rather than just slapping high-res textures on everything, there is great care in the modeling and minor details). I have the urge to explore those environments and that is drawing me to the game.
4) Which PC games on the market today do you feel blow this away and, more importantly, why? What is it about Stalker's visuals that you deem so unimpressive?