it really depends what Nintendo do in term of its support for Wii the next 4 years, if they keep doing what it's doing and bury Wii in favour of Wii U in 2012.
then absolutely PS3 will have chance. Albeit it will probably be 2016, but I don't think PS3 will stop selling for a long time to come, look no further than PS2.
let's not forget to mention that PS3 will never outsell Wii according to VGC, how much is PS2 undertracked so far?? 12 million?
Soriku (Feb 10/08): In 5 years the PS3/360 will be dead.
KH3 bet: "If KH3 comes to Wii exclusive, I will take a 1 month of sig/avatar by otheres open a thread apologize and praise you guys' brilliance." http://vgchartz.com/forum/thread.php?start=50&id=18379
Original cast: Badonkadonkhr, sc94597 allaboutthegames885, kingofwale, Soriku, ctk495, skeezer, RDBRaptor, Mirson,