PS360 games cost more and thus have to sell more. As more high cost games come out on these consoles it will make for a more competitive marketplace where selling these numbers is increasingly difficult for a lot of high budget games (the biggest ones like MGS, FF, COD, GeoW... will be fine of course).
This will make an environment where it will be increasingly harder to justify high budget games that aren't sure fire hits on the PS360 and the choice will be between making a middle of the road PS360 game or a high budget Wii game with similar amount of money with the Wii game having to most selling potential due to the bigger userbase (middle to high budget games started now will come out when the Wii has 50% marketshare or very close to it).
Sri Lumpa here, I lost the space when I lost my profile 
