killzone 3 vs resistance 3

[Kilzoned82]

R3 for Q4 2010. KZ3 for March 2011. Timing the release is critical for sales for both of these games.
I would go for Killzone 3 ahead of Resistance 3. I own Killzone 2 its a good game. I am not interested in Resistance 3. I have never played either of the first two Resistance games.