Here's one way the PS4 won't ever beat PS2, and one way it already is
PS4 vs PS3 in Japan Sales Comparison - PS3 Retakes Lead in June 2020
PlayStation 3 vs PlayStation 4 - Difference and Comparison | Diffen
List of best-selling game consoles - Wikipedia
Xbox 360 vs. Wii vs. PS3: Who won the console wars? – GeekWire
U.S. market share of console operating systems 2012-2021 | Statista
Sony analyzes games console sector and predicts PS5 will reach 50% market share revenue – Gaming And Media
Charts: The State of the Multi-Billion Dollar Console Gaming Market
PS5 Sales in Japan Surpass 3 Million Units, Outpacing PS3 and PS4
PlayStation gaming consoles: unit sales UK 2011-2019 | Statista
PS4 vs PS3 and Xbox 360 – VGChartz Gap Charts – January 2018 Update
PS4/XB1 Adoption Rate Is Well Ahead of PS3/360 in the UK; Significant Further Hardware Sales Expected
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
PS4 vs PS1/PS2/PS3 in sales so far | Page 3 | NeoGAF
Market share by region : r/PSP
Sony analyzes games console sector and predicts PS5 will reach 50% market share revenue – Gaming And Media
Nintendo vs Sony: The Best Gaming Console - History-Computer
PS4 Has More Million Sellers Than PS3 In Japan But Falls Short Compared To Nintendo Switch
Amazon | 【PS4/PS3/PC対応】ファイティングコマンダー | コントローラー（ハンドル・ジョイスティック）
Sony dominates console market with 57% share worldwide | VentureBeat
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
PS4 Hardware and Software Selling Faster than PS2 and PS3 in Asia
PS4 sales hit 88 million, surpass PS3
Analysis: Sony pushes past 50 percent of the worldwide console market | Ars Technica
Xbox Expected to Gain Console Software Market Share over PlayStation & Nintendo By 2026
