Cara Maria, Laurel, and a lot of balls. How did that do in the ratings?
According to TVByTheNumbers this episode was viewed by 1.056 people and received a rating of 0.6 in the 18-49 demographic. A drop of a few viewers, but the rating remained consistent.
The Aftershow was viewed by 660,000 people and received a rating of 0.4 in the 18-49 demo.
Stop Being Polite 
Do you know what the peak ratings for RW/RR Challenges have been in the past? Maybe not specific numbers but which were the most popularly watched seasons?
I think Inferno 2, which had episodes that hit nearly 3 million viewers.