 In a significant decrease from the previous episode , the episode was viewed in 6 @.@ 21 million homes in its original airing , according to Nielsen ratings . The 52nd Grammy Awards and the Pro Bowl aired simultaneously to the Animation Domination block , resulting in lower than usual ratings . Despite this , the episode also acquired a 3 @.@ 2 rating in the 18 – 49 demographic , surpassing The Simpsons , American Dad ! and The Cleveland Show , in both rating and total viewership . 
