The Permanence (so far) of Animation Domination

I'm not referring to the glories of Up or the box office grosses of Avatar, but the Fox Network of a Sunday evening.

FOX Sunday animation No. 2; ‘Sons of Tucson’ ranked 4th

Last night FOX ranked No. 2 for the night among Adults 18-49, Adults 18-34 and Teens with its Animation Domination lineup and the second week of new comedy SONS OF TUCSON.

At 8p THE SIMPSONS posted a 2.8/8 among Adults 18-49 and was up +12% versus last week (2.5/7). THE SIMPSONS ranked No. 2 in the half hour among Adults 18-49 and No. 1 in Adults 18-34, Teens, Men 18-49/18-34 and Women 18-34.

At 8:30p THE CLEVELAND SHOW returned to a 2.5/6 among Adults 18-49 and ranked No. 2 in the time period among Adults 18-49 and No. 1 in Adults 18-34 and Teens. CLEVELAND was down -11% compared to its most recent original on 2/21/10 (2.8/7).

FAMILY GUY at 9p posted a 3.5/8 among Adults 18-49, even with last week’s delivery. FAMILY GUY ranked No. 2 in the half hour among Adults 18-49 and No. 1 in Adults 18-34, Teens and Men 18-49/18-34.

Week two of SONS OF TUCSON at 9:30p delivered a 1.9/5 among Adults 18-49, down -10% from its premiere last week (2.1/5). SONS OF TUCSON ranked No. 4 in the half hour among Adults 18-49, No. 3 in Adults 18-34 and No. 2 in Teens.

Kindly note: The live-action piece of Fox's Sunday night smorgasbord is declining, while one of the longest-running shows in teevee history is going up.

Also note that the animated contingent (Cleveland, Simpsons, Family Guy) is outscoring the live-actor Tuscon by a comfortable margin. My question is, when will other networks develop clusters of cartoon half-hours of their own?

Probably when they figure out how to replicate FOX's success.