Sony PS4 Poised to Pass PS3 Lifetime Sales, Switch Breaks 20 Million Units - ExtremeTech
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – May 2019 Update | N4G
PS4 and Xbox One vs PS3 and Xbox 360 - VGChartz Gap Charts – March 2020
Playstation 4 Pro VS Xbox One X, Sony Might Sell More Consoles According to Research - SegmentNext
Hunter 🎮 on Twitter: "PS4 vs PS3 sales in Japan. PS4 slightly higher, looks like PlayStation caps out at 10M, far less than the PS2 era in Japan. https://t.co/B43EhxhPw3" / Twitter
What Sony's '4.2 Million PS4s Sold' Figure Actually Means - IGN