To be honest, I really don't care if VGC tracks PS4 lower than 180k, even after that adjustments, I don't trust their tracking.
In December when I made this prediction, I was foolish enough to blindly trust them, but there have been WAY to many faults in their tracking in the last 2-3 months. PS4 1 million overtracked, now PS4 800k undertracked, wtf?







