twingo on 28 April 2009
Each studio prefers to work with their own creation their own work.
One engine wont work for GT GOW Uncharted, each game has its own needs.
It would be flat out retarded to use only one engine, if that one fails to live up to expectations all of Sonys studios would suffer due to it. All studios dev and upgrade their engine through out each gen. It works best for them.
