marciosmg on 21 March 2008
| Soriku said: Undertracked means sales have been lower than what they really are. Overtracked means sales have been higher than they really are. Say the Wii sells 50k but VG Chartz puts it at 40k that is undertracking. If it sold 50k but VG Chartz put 60k that is overtracking. |
Thanks soriku, but what i also want to know is why did people say NPD overtracked PS3 and undertracked DS in January. I used to think that it was like what you said, under and overtracked means difference between VGchartz and NPD, but i heard some people say that NPD was wrong, so why do they think it is wrong if NPD has more information (market share )? Thats what i dont understand.
