Using the next gen wars site, I saved Tuesdays amounts and did the math. In the past 3 days..
Wii: 45,310 Sold (Just USA)
PS3: 20,190 Sold (USA and Japan)
360: 141,700 Sold (Worldwide)
Granted the 360 is in all territories and isn't experiencing a shortage(unless those hijacked trucks count, lol).
Just to show how big Holidays sales are..
In all of October 2006, 218,000 360s sold. Compare that to more than half that already selling in just the past 3 days
**I used to have Holiday numbers since 2001 and its rediculous how many consoles sell in such a small time period compared to the rest of the year. I'll try and dig them up later.