[Parley Baer]

Yep, the money boys in the GOPe are going after Cruz and Trump. They are using Rubio to attack Cruz and Kasich and the vehicle to attack Trump.

[gov_bean_ counter]

Morons. At worst Cruz will go back to the Senate where he will be their biggest nightmare ever!

[Marcella]

Article said: "...a group founded by Sean Noble, a former Koch brothers' operative, is paying for the ad..."
You said: "Yep, the money boys in the GOPe are going after Cruz and Trump."

The group who did the ad wasn't the National Republican Committee (GOPe as some call them), but individuals who have a PAC for Rubio. They can make and run any ads they want, so they did.