Third Party Devs have made up their minds about the Wii.

[NJ5]

highwire said:

Where do people get the idea that it's cheaper to develop on Wii games?

Because basically all publishers and many developers have stated so?

Even Polyphony Digital, a Sony developer has said that making PS3 graphics requires much more manpower than making PS2 graphics (which are definitely closer to Wii graphics than Wii to PS3):

http://arstechnica.com/gaming/news/2007/12/kazunori-yamauchi-dishes-more-gran-turismo-5-details.ars