Neither have a likely chance at all... If the 360 couldn't manage 600k this year it will not increase by such a huge percentage next year.
As someone may have said, the 3rd Christmas is often the largest for a console (people have not tired of it yet nor heard of it's successor, and it has a big library of good games). I think we could argue the 360s first Christmas away due to it launching so close with supply problems, so maybe it will increase in Christmas sales next year, but if it sells more than 700k best week I would be surprised.
PS3 has just as little chance next year,... it would really have to explode in sales... I will guess that it will sell better than 360 next year, with best weeks of roughly 600k again for 360, and 700k for PS3.
If the PS3 manages something astounding like 900k, then it might manage a million+ week the year after..... otherwise i doubt it.
