I think the numbers are skewed for the Wii due to the massive success of it's Top 5-10 titles. The 360 and PS3 don't have anything like MarioKart, Wii Fit or Wii Play which just keep selling at almost a direct attach rate for the life of the Wii so far.
SMG which is considered a moderate success sales wise for the Wii is about the same as the 360s Halo 3, which is about double the PS3's leading game in MGS4 and sales for that have pretty much stopped.
When you have first party titles selling 12million+ it's always going to throw out the numbers further down the table
Never argue with idiots
They bring you down to their level and then beat you with experience







