Software is up, but hardware is down YoY to date, so the title is misleading.
Software is up mainly because they've released more games this year to date -- last year prior to NSMB2 launching, I think we had like Kid Icarus Uprising and Spirit Camera and Mario Tennis from Nintendo?
This year you have Animal Crossing, Luigi's Mansion 2, Fire Emblem, DKCR, Mario & Luigi.