WTF?
I checked the September US sales for PS4 and it is heavily undertracked.
VGC: ~400k
NPD: 528k
That is why PS4 looks close to Xbone this week... it sold over 200k for sure... maybe even close to 250k.
NPD proved PS4 didn't sold less than 200k in one week for a long time... at least September was all weeks over 200k.