Some of those numbers are wrong...
Atari had a few rivals that topped 10m (Intellivision I'd wager).
PC Engine was pretty successful in Japan and did ok elsewhere.
Genesis is complicated because I'm pretty sure you can still buy it in portions of South America where they still make it. So the officially tally is 30m...but...I'd wager the company that sells in South America isn't included in the total. Still, South America isn't a big market. But Genesis could easily be in the low 30ms if you include that.
PS2, if you check out our stickied "official big three quarterly results" thread has shipped about 133m "to date" (which is through Sept 2008). Sony did at one point claim it had shipped 140m, but BKK2 and I came to the conclusion it was a typo or a spoken mistake, based on shipments of about 120m through December 2006 in many other sources, ~10m through December 2007 according to a press conference Sony held, and then about 4m through September 2008.
PS2 will certaintly reach 140m shipped, but it isn't quite there yet guys.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
