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.
I'm sure if the PS3 had games with 'PS3' in the title, they would sell as much as those Wii games. The difference is: Sony doesn't implement dirty tactics for sales like Nintendo does. Sony wants to earn success. That doesn't include putting the name of the console in a game's title to mislead consumers.
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.
Mario Kart was massively bundled, and so was NSMBWii. I'm sure they would have sold a lot on their own but denying they were bundled when they were is not the way to go.
Mario Kart wasn't bundled at all until it had already sold over 27 million. NSMB was over 22 million.
If I remember correctly Wii Sports Resort was the first bundled game in addition to Wii Sports (though it had sold around 25 million before it was)... it may have been at the same time as MKWii, or a few weeks before... but not after. I don't think NSMB was bundled till they brought the red console out (or am I mixing it up with that 25th anniversary thing)
Anyhow, in terms of the percentage of bundled sales, I think LBP, GT5:P, Motorstorm and Resistance are probably similar to MKWii and NSMB.