Actually, the Wii isn't that much higher than the PS3 & 360. When you exclude any games with 'Wii' in the title, the list would be virtually identical.
The only reason Wii games sell so much is because game have the word 'Wii' in their title.
Well that's convenient.
Just exclude Mario Kart Wii, New Super Mario Bros. Wii, Wii Sports Resort, Wii Play, Wii Fit and Wii Fit Plus to make it seem like less of a slaughter. Contrary to popular belief, only Wii Sports was significantly bundled. Even then, it stopped being bundled (primarily) a long time ago.
I can maybe give you Wii Play at the most, because that was bundled with Wiimotes (but not all of them) in the beginning.