AND THAT'S IT!!!
Apologies for the extended waiting time, there were PLENTY of adjustments to be made: (The Xbox One adjustments went as far back as the first week of 2019 - So that was fun.) We are at the finish line! It is the 53rd and Final week of 2020! And these are our final results:
PlayStation 4: 8,754,379 units (US - 2,372,519; EU - 4,386,302; JP - 560,311; ROTW - 1,335,237)
Xbox One: 3,156,542 units (US - 1,759,975; EU - 679,115; JP - 3,282; ROTW - 718,170)
Nintendo Switch: 28,256,119 units (US - 9,367,556; EU - 7,359,439; JP - 6,383,954; ROTW - 5,144,170)
The PlayStation 4 and Xbox One, officially in the twilights of their lifespans, came in at 8.8 and 3.2 million respectively. Their declines were accelerated by the Sony and Microsoft shifting focus towards their next gen successors and sacrificing their stock in the process. As a result, I believe they're going to experience even sharper drops than the PS3 and 360 experienced towards the ends of their lives.
The Nintendo Switch puts a wrap on one of the greatest single years for a video game system in history, selling around 28.3 million units, surpassing the Nintendo Wii's peak year of ~24 million in 2008, and coming in 3rd all time for any system behind the DS' back to back peak years of 29.3 and 29.5 million in 2007 and 2008. It also becomes the 1st system to surpass 6 million units sold in Japan since the DS sold ~7.2 million units in 2007. Nintendo is literally competing with themselves. (So much for them going 3rd party.) 2021 is gearing to be another monstrous year for the Switch and Nintendo. How monstrous, especially compared to 2020, remains to be seen.