MTV:The PS Vita is a fantastic piece of gaming hardware, but even a fancy car is just up pile of metal, unless you have someone to drive it. The promise of the full potential of the PS Vita has yet to be seen, but it is slowly being revealed as we learn more about the PlayStation 4. Those sleek new features are all well and good after November 15, but what about right now? Well, right now, you can finally play a triple-A, console-quality FPS on the go on your PS Vita, and see just what Sony's handheld can do. The "Killzone" franchise strikes again as the software that showcases how to push Sony's, and much like "Killzone 2" did for the PlayStation 3, "Killzone: Mercenary" puts the PS Vita through its paces.