"The 8th generation has heated up in the last few weeks with the launch of the PlayStation 4 and Xbox One. The PlayStation 4 hit US shelves on November 15, followed by the Xbox One a week later on November 22.
The PlayStation 4 managed to sell 984,212 in the first 48 hours in the US, while there were 732,569 Xbox One's sold. The PlayStation 4 outsold the Xbox One by about one third.
There were 2,255,864 games sold for the PlayStation 4. That would put the attach ratio at 2.29 games sold for every console sold. There was also 1,885,427 games sold for the Xbox One. That would put the attach ratio at 2.57 games sold for every console sold. That figure is slightly higher than the PlayStation 4."