PS2 was at 129m+ shipped through March 2008 and is now at 131m or so.
It took 5 years 9 months to reach 100m shipped.
DS will reach 100m shipped in 4 years 6 months.
Wii is tracking than DS, which is tracking faster than PS2.
Wii is more expensive than PS2 was by this point in its life. So if you believe as Sony fans that PS3 will top 360 when selling less at the moment but costing more, you have to be consistent and believe Wii will sell alot more than PS2 since it is outpacing it while costing more.
Now, you could argue that most of the 20 months PS2 was more expensive than Wii...$300 to $250 but Wii is outpacing PS2 by more than 20% in most regions which is what the price advantage would mean overall. But PS2 never reached Wii levels even in its peak which was immediately after it became $200 in 2002.
The best hope for PS2 is the long tail...but Nintendo's top platforms have it too:
NES did 34m in the Americas and was still readily available at retailers through the mid 90s despite launching in the mid 80s. SNES & Genesis were similar 1991-2000 and 1989-1999 lifespans, its just the peaks were so much lower than PS1/PS2/GB that we don't think of those last sales gasps in 1997-2000 as a long tail.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
