Simon Cowell at world premiere of X Factor in the US
Simon Cowell at world premiere of X Factor in the US Reuters

On a Thursday night when ratings were down overall, Fox's The X Factor tied a Big Bang Theory repeat and Person of Interest on CBS. CBS took an overall victory, according to preliminary numbers.

The X Factor was down slightly from last week, drawing a 2.8 rating/8 share in the adults 18-49 demographic, with 9.6 million total viewers. A Bones repeat followed.

On CBS, a repeat of The Big Bang Theory at 8 drew a 2.8/9 with 10.1 million total viewers. Rules of Engagement at 8:30 received a 2.7/8 with 9.7 million total viewers. Person of Interest at 9 performed flat with last week, scoring a 2.8/9 and 12.7 million total viewers. The Mentalist, at 10 had a 2.7/7 and 12.9 million total viewers, making it the most-watched show of the night. CBS was the highest-rated network of the night, averaging a 2.8/8.

ABC's A Charlie Brown Christmas at 8 yielded a 1.8/5 and 6.4 million total viewers. The Year With Katie Couric at 9 received a 1.5/4 and 5.5 million total viewers.

NBC ran repeats throughout the night, save for a new episode of its shelved crime series Prime Suspect at 10, which dropped 38 percent, hitting a season low with a 0.8/2 and 3.6 million total viewers.