http://www.ign.com/articles/2012/11/09/npd-nba-2k13-resident-evil-6-top-us-charts
"Nintendo noted that Pokemon Black Version 2 and White Version 2 sold more than 865,000 units combined, and that New Super Mario Bros. 2 sold 135,000 units in October, putting it at 675,000 units sold in the United States to date. "
Good result for Mario, way better than japan - for the month, not lifetime.