Are wii development costs really cheaper?

[NJ5]

Yes, they are. Capcom has said they moved Monster Hunter 3 to the Wii due to higher PS3 development costs:

http://www.gamesindustry.biz/articles/high-ps3-costs-prompt-capcom-to-move-to-wii

Someone from Polyphony Digital has also said PS3 development is much more expensive than PS2 development, due to higher detail in the car models:

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

Surely the Wii is between PS2 and PS3 in terms of costs.

There's also THQ:

http://www.gamespot.com/news/6149154.html

And the famous graph from Factor 5:

http://i32.tinypic.com/10glffn.jpg