During week 13, the gap grew in favor of the PlayStation 5 when compared to the aligned launch of the PlayStation 4 by 20,759 units. However, in the last month, the PlayStation 4 has grown its lead by 7,042 units. The PlayStation 4 is currently ahead by 121,214 units.
The PlayStation 5 has sold 5.18 million units in 13 weeks, while the PlayStation 4 sold 5.30 million units. Week 13 for the PlayStation 5 is the week ending February 6, 2021 and it is the week ending February 8, 2014 for the PlayStation 4.
source: gamezpot.com