^No the 360 is the only reason the PS3 is getting the third party support it is getting, because without it, PS3's base is too small.
If not for the 360, the third parties would be supporting the Wii, because the PS3 base is too small for the third parties, the PS3+360 base is slightly larger than the Wii however, but seperately, they aren't anywhere near the Wii's size, which is why so many multiplats are made
Predictions:Sales of Wii Fit will surpass the combined sales of the Grand Theft Auto franchiseLifetime sales of Wii will surpass the combined sales of the entire Playstation family of consoles by 12/31/2015 Wii hardware sales will surpass the total hardware sales of the PS2 by 12/31/2010 Wii will have 50% marketshare or more by the end of 2008 (I was wrong!! It was a little over 48% only)Wii will surpass 45 Million in lifetime sales by the end of 2008 (I was wrong!! Nintendo Financials showed it fell slightly short of 45 million shipped by end of 2008)Wii will surpass 80 Million in lifetime sales by the end of 2009 (I was wrong!! Wii didn't even get to 70 Million)
