So as we have to burn time and posts until such a time as the attention is shifted from this thread, how about a terrible estimate for PS4 WW sales?
From
my post here on US|WW ratios of PS4 sales, sales in 2014 of PS4 have wavered between as little as 30% of WW sales being in the US to as much as 38%.
While the most recent data suggests a 30% US|WW ratio of sales I would qualify that in that time period [from April to August] PS4 was introduced to 28 more markets and while small likely weighed down the rest of the world's share. I think ~34% or higher for the US's share is likely between August 11th and October 4th.
PS4 US LTD since August 10th ~= 681k
At 34% US|WW Ratio, WW sales of PS4 between August 11th and October 4th would be ~2003k, a little over 2M
At 38% US|WW Ratio, WW sales of PS4 between August 11th and October 4th would be ~1792k
So likely the PS4 either approached or surpassed 12M sold through WW as of the beginning of October