Dude... Look at DS sales. Brain Age, Animal Crossing, Mario Kart DS, New Super Mario Bros, Nintendogs. These title simply do not die. They remain in the top 20 for YEARS after release. WiiFit and Mario Kart will follow suit.
Wii Music might as well and Animal Crossing is MASSIVE. 10-15 million seller ww most likely.
Don't forget titles like Lego Batman, both Star Wars titles, Guitar Hero 4, Rock Band 2 etc will all sell extremely well on Wii.
I doubt any of the 3rd party titles you mention will be huge factors. Should do well but none are system sellers.
As for 360/PS3 it's also more of the same. The titles they have will appeal to the same audience they already have (with few exceptions). So they are not positioned to upset the Wii's dominance.







