Why aren't Sony exclusives/software selling anywhere close to Xbox360?

[EdStation3]

Here are my two hypothesis'(sp?):
Hate to generalize, but I think PS3 owners tend to be more mature. While 360 owners tend to be less mature. I using my friends, coworkers(past and present), being in public and listening to gamers talk and family as my sample. There is more 360 owners that tend to be in the mid to early 20s[14-21]. And there is more PS3 owners that tend to be in the late-early 20's to mid 30's [22-25]. My point? The largest group of 360 owners tend to have way more disposable income. PS3 owners have less as they usually have to worry about car payments, rent or even mortgages, they have full time jobs etc. I go into WalMart and hear the employess (16-18) talking about hew new Halo or Gears. In my family the PS3 owners are my older brother, older cousin & my other cousin's husband. They have rent, kids, and mortgages to pay. They don't have the disposable income that my 16 year old cousin working partime at McDonald's has. The friend's 18 year old brother also has a 360 with
20 some games. He finsihed highschool, didn't go to college and works at a grocery store deli. Has time and money to burn.

Also PS3 attracts a lot more casual and niche gamers. They're less likely to blindly buy what ever the TV ads tell them too.