Super Mario Bros. Wii Selling More Than Super Mario Galaxy?

If you thought that 2D games were dead then think again.  Super Mario Galaxy was a 3d mario game that was considered the best game for the wii but now that nintendo made Super Mario Bros. Wii that is now a false statement. Super Mario Galaxy has sold 4.1 million copies since it’s release about 2 years ago and Super Mario Bros. sold 4.2 million copies in the past 2 months that it came out.  Since Super Mario Bros. is a 2D game i think it would be better for our plumber friend to go back to 2D cause that’s how it seems to work better for him.