It looks as if Microsoft is ready to let give PlayStation 4 the hardcore gaming market. According to VG Leaks, the new Kinect will drain a lot of resources away from the next-Xbox due to all it’s added functionality. Now remember even without Kinect running the next-Xbox is significantly weaker than the PlayStation 4. Add the mandatory Kinect into the mix and well… you are starting to reach Wii U levels of power.
The document also hints at other elements of the Durango design. Significant OS resources are kept aside in order to run Kinect across multiple applications that operate simultaneously
Source: VG Leaks