I am currently using this for my lifetime predictions.
| Wii | Minimum | Expected range | Maximum |
| World | 100 | 140-155 | 200? |
| Japan | 18 | 20-25 | 30 |
| Americas | 45 | 65-70 | 85 |
| Others | 37 | 55-60 | 85 |
| PS3 |
Minimum | Expected range | Maximum |
| World | 40 |
50-60 | 85 |
| Japan | 4 | 5-7 | 8 |
| Americas | 14 | 16-19 | 32 |
| Others | 22 | 29-34 | 45 |
| X360 |
Minimum | Expected range | Maximum |
| World | 40 | 45-55 | 65 |
| Japan | 1 | 1-1.5 | 2 |
| Americas | 25 | 29-35.5 | 42 |
| Others | 14 | 15-18 | 21 |
Going by that it is possible the PS3 will pass X360 in Americas, but unlikely.... as in the worst case X360 will sell 25 million, wheras if PS3 picks up a lot it has a chance to sell over 30 million there.
You will also notice in this the Wii has no chance of being caught in either Americas or Japan... and PS3 would have to make a big turn-around (similar to the one that would cause it to outsell X360 in America) to pass the Wii in Others.











