There's no denying that the PlayStation 4 is off to a decent start, with Sony announcing that it has already sold 2.1 million consoles worldwide since its Nov. 15 launch in North America, but Sony thinks it will do better than the PS3 did. The PS3 fell short of Sony's PlayStation 2's sales - 150 million consoles sold worldwide. By comparison, the PlayStation 3 managed to move 80 million units. With the PS4, Sony hopes to match or exceed the success of the PS2. Sony Computer Entertainment president Andrew House believes that the PS4 is primed to exceed the PS3.