No no no remember L4D2 is "DLC" and the real L4D will still get support.

I think Killzone 2 will win eventually, mainly (as others have stated) because L4D2 is out next month.

Does anybody think that Uncharted 2 will impact Killzone 2's sales? Before Uncharted Killzone 2 was the biggest PS3 exclusive of the year, so will that take away from Killzone 2's sales, or will the hardware boost the PS3 gets from Uncharted help Killzone 2?

I say Left 4 Dead. Killzone 2 may be selling more on a weekly basis right now, but it's not by any huge amount. It hasn't shown strong enough legs to maintain these sales, and L4D will probably finish a few 100,000 units higher.

L4D is online game and I can't see how the second one well boost the sales.

It seems some people think Left 4 Dead 2 will help the original game and other people think it will hurt it. Does anybody want to elaborate on why they think it will hurt/help the original?

I think L4D 2 will hurt sales of the first because it simply offers a better experience. I dont really know any gamer that would want to buy a game that so heavily relies on Multiplayer when the community will probably move on to the sequal. CoDMW and CoDWaW arent direct sequels but i dont see anything like CoDMW happening with L4D.

I still think L4D will end up selling more than KZ2 unless KZ2 sees constant 25k sales for a while, through the holidsays, while L4D drops significantly.

Left 4 Dead's lead will have shrunk by next year, but I think sales of both games will be dead before Killzone 2 can overtake it.

Wait a minute...That's highly unlikely!!!1!!!