I think it was MGS4 + $100 gift card at Walmart that did it! - Remember Vgchartz doesn't track walmart.
http://www.joystiq.com/2008/06/11/wal-mart-corporate-confirms-100-ps3-gift-card-yes-even-mgs/
Theres the scoop. So I think that explains both the discrepency and the huge sales the PS3 got.
$499 80GB PS3 with $60 MGS4 and $100 Gift card = $160 discount for some people. Or they could have gotten a 40gb PS3 no MGS4 for $399 with said $100 gift card and bought a PS3 for less than a Pro Xbox360 if you add it all up. *Xtra controllers/games etc*
So based on that I would predict that theres not yet any indication of a trend for a huge increase in PS3 sales rates.
Tease.







