No, because USA <> TheWorld... there are still tons of (expensive blu-ray bundled) PS3 lying around here in Europe...

Well in Switzerland there's a 40Go PS3 shortage since end of June. Just saying.

Way to take it out of context.  Kasz simply means for example that a company reports 600k for month 1, then during month 2 they realize they overtracked by 50k.  So instead of reporting 500k during month 2 they report 450k.  This company would be less trustworthy than a company that intially reports 600k for month 1, then adjusts the amount to 550k, and reports 500k for month 2.

VGC certainly does the latter, though it's up in the air as to how NPD handles corrections.  I'm inclined to believe that they do not adjust future months, but instead release corrections to paid customers only.

@souixan
Nintendo always has reported to retailers, it's just due to Wii's being nearly sold out WW for so long the numbers were very close.  Also, the difference in shipped and sold can most likely be attributed to the often proclaimed and also often denied stockpiling.