I was looking at a sales comparison for the three consoles, and saw two points that the PS3 had beaten the Wii in WW weekly sales.
1) June 15th 2008- MGS4. Just about beat the Wii.
2) 25th March 2007. Completely destroyed the wii. The PS3 got almost 600k sales and the wii got some 200k. What happened here?
EDIT: I've discovered that Oblivion was released on March 20th 2007. But that only got 700k sales. Could that be the reason? Until GTA4 it was the highest rated PS3 game on GameSpot.









