Updated: Follow up article has been posted, so polls have been taken down.
This is the second entry in reader appreciation week, where you all pick the games we will be looking at. And for the Sales Battle of the Day you picked Killzone 2 vs. Left 4 Dead.
Sales Battle of the Day
Killzone 2 vs. Left 4 Dead

| Column1 | Last Weeks sales | Last Months Average sales | Last 3 Months Average Sales | Total sales |
| Killzone 2 | 25,361 | 22,760 | 18,220 | 1,985,462 |
| Left 4 Dead | 12,675 | 13,743 | 10,173 | 2,431,020 |
| Difference | 12,686 | 9,017 | 8,047 | -445,558 |
| Column | Based on Last Week's sales | Based on last month's average weekly sales | Based on last 3 months' average weekly sales | |
| # of weeks until Killzone 2 outsells Left 4 Dead | 35.12 | 49.41 | 55.37 |
Description: Killzone 2 and Left 4 Dead were both highly anticpated shooting games on their respective platforms. Online play is also a key component of both games' appeal. Sales wise both games have been on the market less than a year, with Left 4 Dead having a 10+ week head start. Currently Left 4 Dead has a ~450k lead, but Killzone is outselling Left 4 Dead on a weekly basis. So which game will end up with the higher total sales, when both are done selling? Vot in the poll then let us know what you think.
Note: We are only considering Left 4 Dead's sales on the 360.
As mentioned at the start of this post, this is part of a week long reader appreciation where you all pick the games we look at. The next series is Retro Sales Game of the Day, and here is a poll for the games nominated so far. If you want to add a nomination, I will still add it to the poll, but the sooner you get it in the better, so that the other games don't have too big of an advantage. You can also nominate games for Look at Those Legs game in this thread.
Previous Sales Battle threads
Little Big Planet vs. Wii Music (article link)
Mario Kart Wii vs. New Super Mario Bros. (9/29) (article link)
Guitar Hero 5 vs. The Beatles Rock Band (9/19) (article link)











