Microsoft probably had a good idea that Sony CEO Kazuo Hirai and his team would talk up the PlayStation 4 during his opening keynote at the 2014 International Consumer Electronics Show on Tuesday, so it preemptively announced a huge milestone for its own next-generation video game console: 3 million Xbox One units sold in just 40 days of availability in 2013. The figure is very impressive indeed, but Sony just announced an even bigger number for Xbox One rival: Sony has sold more than 4.2 million PS4 consoles as of December 28th, 2013.

It’s worth noting that the PlayStation 4 was available for one more week in 2013 than the new Xbox, having launched on November 15th last year. Microsoft’s Xbox One debuted on November 22nd.

Sony announced in mid-November that sales of its new PS4 console climbed over 1 million units during its first 24 hours of availability. Within the new PlayStation’s first two weeks on the market, sales reached 2.1 million units globally.