LOL xD
Maybe they just can't track everything :P but everytime accurate data is shown, they adjust the numbers to match that.
I think PS3 will be back under 100k next week in EMEAA (when it's actually more) because the reason they got the 144k there was some nintendo numbers they used as a source for the adjustment (I think) and they couldn't track what nintendo tracked... but it will be adjusted again in the future if that undertracking happens again.
I may be wrong with this xD
I never believed the numbers were 100% accurate, though. It's obvious they can't track everything... specially because of those hard-to-track regions. But they're pretty close to reality :P