It might have meant nothing when Radical CEO Kelly Zmak told us that "he'd love to show [us] all 12 hours of Prototype." Maybe he didn't mean that the average gamer would get 12 hours out of the game. Maybe that's the time he's shaved his speed runs down to, maybe he just misspoke, we don't know.
But, for what it's worth, he mentioned 12 hours and Prototype, and we're delivering that knowledge factory fresh to your dome. Do with it what you will.