If they release it exclusive they can get it out this year, but if they release it multiplatform they would probably have to take a year to get the PS3 version up to speed. They would have to go against Call of Duty Modern Warfare 3 on the PS3 and Xbox 360 in 2011 and they would probably lose sales on the Xbox 360 from a delay.
Do you know what its like to live on the far side of Uranus?