You can read the complete Article #5 and Analysis here:
PlayStation 4 Vs. DS Global:
Gap change in latest month: 201,534 – DS
Gap change over last 12 months: 7,326,330 – DS
Total Lead: 31,922,312 - DS
PlayStation 4 Total Sales: 103,758,169
DS Total Sales: 135,680,481
Clash of the Titans.
The DS really shows that Nintendo systems can have Playstation-like legs. Hopefully Switch also demonstrates this.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023. (And over 130 million lifetime)