PS4 sales surpass 91.6 million, Spiderman over 9 million

[PAOerfulone]

mjk45 said:

PAOerfulone said:
91.6 million by December 31st.
VGC has 90.5 million by December 15th.
Looks like even with the latest adjustments, there is still some slight overtracking on VGChartz' part. Still incredible sales from Sony though. 100 million is just around the corner!

I'm a bit confused  how does being  1.1 million under Sony's end of year sales half way through D equate to being overtracked.

You don't honestly think it's only going to sell just 1.1 million in the last two data weeks of the year, plus 2 days. Especially after it just sold 800k in the recent update, and that's after adjustments. Even if sales dropped by 100k in the next week, that would leave it with 400k left to be sold with just 9 days to go, including the day before Christmas Eve. 

So either sales absolutely tanked in the last 16 days of the year or the system is slightly overtracked up to this point.