Then why you're asking?
You know Sony is lying. They've literally published dozens of games developed in less time, from Final Fantasy VII to the Uncharted and Resistance games.
Also, opinions. It's an AAA game nevertheless. Most ACs, CoDs, Battlefields etc. out there are developed in two or three years or so. Or even less.
You're convinced the answer to the question is fully disclosed. I'm not.
Opinionshminion. A six year old might think Knack is the best game ever. Doesn't change the fact that it is mediocre.
Hunting Season is done...