Well, it was going to happen sooner or later. Mario Kart Wii and Wii Fit are just monsters that can't be stopped. But still, SMG is doing very well with nearly 7 million units sold in about 9 months.
Currently Playing: Mario Kart 7, Mario Kart 8, Luigi's Mansion: Dark Moon, The Legend of Zelda: Majora's Mask, Super Smash Bros for Wii U
Predictions:
Super Mario Galaxy will pass Super Mario 64 in total sales CORRECT!