PS3 will sell back to back 1 million console sales

[pearLy]

Last year's HD sales of the holiday week ending December 28th were around 87,25% of the week before (ending December 21st).
Since this year's December 26th can be compared better to December 28th I'd say:

87,25% x 1002k = ~870k PS3s
87,25% x 658k = ~570k 360s
for the week ending December 26th

What do you think?