The new system and game cash in during their first weekend.
Enterbrain has reported that Nintendo has sold 193,441 3DS LL systems in its first weekend on sale in Japan. The 3DS revision was released on a Saturday, with the figures only representing units sold on July 28 and July 29.
Meanwhile, New Super Mario Bros. 2 sold 430,185 units in the same timeframe. These numbers do not account for the downloadable version of the game.

The sales numbers for the whole week will be released later this week.