Sales numbers are not always indicative of a game's quality.

[dougsdad0629]

I've seen a lot of people talk about how quickly ODST outsold Killzone 2, however a quick search on this site will yield you many examples of how sales numbers do not directly reflect a game's quality.  Mediocre games such as Wii Music (2.62 million) and Sonic and the Secret Rings (2.06 million) are just a couple of examples.  Let's go in the other direction.  An outstanding title such as Boom Blox hasn't even cracked a million.  I used Wii games as examples because the Wii is full of mediocre titles with huge sales and outstanding titles with lousy sales.  Don't judge a game based on sales numbers.  ODST outsold Killzone 2 in 24 hrs.?  So what!  I'm not saying ODST is mediocre.  I've read several positive reviews.  I'm just saying play Killzone 2 before you judge.