The 360 was able to outsell the PS3 by ~151K for the week. However, thanks to adjustments made to the PS3 (finally included adjustments made for all previous weeks of 2011, as well), the gap has only slightly dropped.
As of week ending Dec 10th - 11,958,663(PS3) - 11,152,898(360) = 805,765 or ~403K over the PS3 for the next 2 weeks.