So NPD (US), Media Create (Japan), GfK (UK / Other Europe) and VGC (worldwide) are all wrong... ?!
I really don't know, but if we talk about undertracked all of the ones I listed above undertrack the PS3. Every single one. That does sound strange. But maybe Sony counts in a different way. Like consoles ordered, but not shipped or even sold to customer yet.
This is no trolling, just some thoughts.
Imagine not having GamePass on your console...







