Blizzard claims 3.5 millions D2 sales on day one, VGchartz 1.8 mill on the week..

[TWRoO]

pezus said:

Rath said:
VGChartz does not track digital sales. It's a huge weakness, but it explains the massive difference.

Actually, not completely. No way is the retail PC market only ~30% of the total.

It's also a Blizzard press release.... so the whole sales vs. shipment thing also likely applies.