The proclamation comes less than 24 hours comes after Microsoft announced Xbox One sales had doubled since it started selling the a less expensive version of console without the Kinect sensor.
Neither side released specific sales figures to back up its claim, but Sony is also sticking its flag in the software sales crown.
The 3DS also experienced a 55% hardware jump compared to May 2014.
In terms of the next-gen, the latest official hardware figures had the PS4 at seven million sales (as of April this year), the Xbox One had three million by the end of 2013, while the Wii U had sold 6.17 million by the end of March 2014.
For Nintendo, slow and steady doesn't quite win the race, but it seems good enough for a solid second place at the moment.
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A technology journalist, writer and videographer of many magazines and websites including T3, Gadget Magazine and TechRadar.com. He specializes in applications for smartphones, tablets and handheld devices, with bylines also at The Guardian, WIRED, Trusted Reviews and Wareable. Chris is also the podcast host for The Liverpool Way. As well as tech and football, Chris is a pop-punk fan and enjoys the art of wrasslin'.