How long was the x1 selling better than the 360?
3 years and 5 months, as you can see here. The problem is that it's not comparable.
360 sold very poorly early in it's career. Beating those numbers were not a high bar to beat. And yet, the XBO only managed to do so with massive promotions during the holiday season, because outside of it the 360 generally sold better. This also resulted in the console being pretty frontloaded.
Neither is the case with the XS. It doesn't need big promotions to sell, and it doesn't just sell during the holiday period, but throughout the year.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/