Why do X360 exclusives sell more than PS3 exclusives?

[osed125]

Farsala said:
3 reasons come to mind.
1. Xbox 360 came out a year before PS3, thus an infinite year head start on software in many aspects.
2. North Americans (360 land) on average buy more games then Europeans (Sony land).
3. Sony focuses on new IPs more then MS.

This.

There is also the fact that most of those PS3 exclusives don't sell really well in Japan (not that the 360 games do but those sells could help).