The hardware upgrade sold 193,000 units in its first two days of sale in Japan, compared to 68,000, 170,000 and 100,000 for the DS Lite, DSi and DSi XL, according to Nintendo Gamer.
It was added that the 3DS XL has sold more in two days than the PlayStation Vita has in the region, the latter having only shipped 163,000 units since February.
Elsewhere, New Super Mario Bros 2 sold 430,000 copies in its first two days of sale, not including digital sales through the eShop.
Released last week in Europe, the 3DS XL gives players a total of 90% more screen space and improved battery life.
It also comes with a 4GB SD card, compared to the 2GB that ships with the original, but won't include a charger.
The Nintendo 3DS XL will be available on August 19 in North America.
> Nintendo 3DS XL UK price round-up: Where's cheapest?
> 3DS XL review: Should you upgrade to the larger handheld?
Gallery: A history of console revisions in pictures: