Who cares if Cruz wipes the floor with McConnel?
While Cruz cited the Majority Leader's duplicity to make his case, his central theme was that the rules continue to be used to protect favored corporate-welfare projects and not for items the GOP-e finds annoying, such as demanding Iran release the four US prisoners or defunding Planned Parenthood.
You and I may agree to disagree about this, but I think Cruz said something that needed to be said both because it is correct and because it shows primary voters a difference between his positions and those of the GOP-e.