I’ve always been a bigger PlayStation fan, but this is a great selling point:
What they did was they created a software-based 360 emulation within the
Xbox One architecture. So, when you put your disc in the drive, we’re
actually loading up an emulator, and then we put up a little portion of
the Xbox 360 dashboard and you use that dashboard to launch into your
game
Sony has launched PS2 emulation for the PlayStation 4, with a crop of old Star Wars games released as a bundle on the console, Digital Foundry reported.