Microsoft and Sony already went head to head with worldwide sales numbers for 2013 and while the PS4 rode is out front there (4.2 million to 3 million), the Xbox One apparently sold more systems in the US last month. December figures from the NPD group arrived today, and Microsoft is touting 908,000 sales for the XB1 that put it atop the next-gen videogame systems, and 643,000 for the Xbox 360. That puts it third overall on the home hardware list and first for its generation of hardware. Per Joystiq, Sony's response to the data is that the PS4 remains "cumulative leader for next-gen sales" since its launch November 15th, a week ahead of the Xbox One.
Nintendo hasn't released specific data yet, but the 3DS was the highest selling console overall for both the month of December and all of 2013, and Liam Callahan of the NPD said the Wii U enjoyed its "highest month for unit sales." The NPD's release has more details about software, where GTA V took the crown overall for 2013, ahead of Call of Duty Ghosts, Madden NFL 25 and Battlefield 4. Microsoft is also pointing to those numbers, saying the Xbox One took six of the top 10 spots for next-gen game sales, and total software sales of 4.8 million to PS4's 4.2 million. Now that fans have plenty of sales numbers to represent why their chosen next-gen game system is the best, the rest of us can get to the exciting business of waiting for the first round of major software updates.