Mummelmann on 16 December 2011
Good number, especially considering the small installed base compared to the PS2. But it will never get 10 million, not even close. That is in no way an indication of poor performance though, it has sold roughly about the pace I imagined before launch and has done very well.
People who expected, and even guaranteed, 10 million lifetime saw themselves blind on Prologue sales and overestimated first week sales and sales potential in Japan.
Japan will never be the same as a home console market after this generation, they seem to have shifted their primary focus on handheld gaming for the foreseeable future.
