Ok so this is the method krik was referring to, and I'll explain why its a horrible method. Basically he goes to each region and does it from the launch of the PS3 specifically. As you can see even this method supports the points I made in my last post.
Japan:
| Console | Wii | PS3 | X360 | PS2 |
Japan | 5,495,842 | 1,973,943 | 414,931 | 1,176,052 |
America:
| Console | Wii | PS3 | X360 | PS2 |
America | 9,730,065 | 4,249,855 | 7,838,110 | 7,087,195 |
Others:
| Console | Wii | PS3 | X360 | PS2 |
Total Others | 5,818,107 | 4,512,586 | 2,683,669 | 3,918,032 |
So for this post I will explain why this method of comparison is faulty.
Now the first problem with this comparison is that all of the data points start on strong weeks for the PS3. The fact that the launch had large stagger is a bad thing from a business and consumer viewpoint anyways, but this comparison rewards it by framing it up like everything is just roses and sunshine.
Where this is really skewing the matter is the simple fact that any pent up demand for the PS3 due to a staggered launch has been taken care of because it has been widely available in all regions for quite some time. So what you're really doing is cutting out all of the PS2 sales from Europe/Others during that period and the PS3 gets all the sales it would have had anyways since the demand is held over until the launch.
By comparing from the launch you've not only stacked the deck in favor of the PS3 but against the PS2. Pick a date...compare all of the consoles its really simple.
The least flawed comparison we can make is actually to choose a point after the launches for all regions are done. But like I said I don't think that fits your vision of what this thread should be:
From the first week in April '07
| Console | Wii | PS3 | X360 | PS2 |
Total | 16,627,936 | 7,965,546 | 8,151,640 | 8,482,991 |