Well, you can do some compare-and-contrast research if you so choose; we had the rumored Xbox 720 specs a few days ago and now, a new set of supposedly leaked PS4 specs have been uncovered.
As revealed at Kotaku , Sony's next console will boast a controller with a rear touchpad, but it's a little different than other sources previously reported . It seems that information was actually about taking the rear touchpad found on the PlayStation Vita and implementing it on the PS4 controller, although there's no confirmation of the rumored biometric support. It's still a possibility, of course.
There's also evidence that the new gamepad will boast a "Share" button, which sort of implies social networking functionality, and we can also expect an upgraded version of the Sixaxis motion control. Oh, and Dual Shock 3 and old Sixaxis controllers should be compatible with the new console, too. As for the PS4 dev kits, they're apparently featuring 8GB of system memory, 2.2GB of video memory, an AMD Bulldozer eight core processor, and an AMD R10XX GPU. Plus, there's the Blu-Ray drive, four USB 3.0 ports, 2 Ethernet ports, and a 160GB hard drive. …let's just assume that the retail versions boast a much, much bigger HDD.
So what say you?