Lets look at some big, good quality 3rd party games that haven't released on Wii in 2009.
Batman Arkham Asylum
Modern Warfare 2
Those are just a handful.
Why do third party publishers ignore the Wii even though its selling bucket loads ? Its crazy.
Wii games usually have long legs because there are a lot of potential impulse buyers than PS360 combined. And it wouldn't cost a lot to downgrade the graphics to put it on Wii would it ?
With decent advertising along with the PS360 versions, third party publishers can make a lot of money via the Wii.
Why do they ignore it ?