Those two royals must be in the pro-Naef or anti-Selman camp.
Ben Salman has put his hands into everything and is raking in billions for his appointees and himself.
Problem is, theres no "good guy" in Saudi Arabia. The only organized voices other than the regime there are even more radical islamists that complain Saudi Arabia isnt radical enough.
Ben Salman is rumoured to take some moves to diminish some Wahhabi influence to present himself to the West as as useful against terrorism as Ben Naef, however, his entire foreign policy has been based on inciting sunni extremism against shiites.
Then again he would only be joining the american ambiguous line of fighting extremism in one place yet using it in Syria and elsewhere.