The gap grew in favor of the PlayStation 4 and Xbox One in July 2017. The gap in the latest month grew by 83,809 units and by 952,168 units in the last 12 months. The PlayStation 4 and Xbox One lead by a combined 22.68 million units.
The PlayStation 3 and Xbox 360 in their first 45 months sold a combined 70.12 million units, while the PlayStation 4 and Xbox One have sold a combined 92.80 million units.
[Source: vgchartz.com ]