Also, another advantage Saudi Arabia has is that press freedom does not exist. The harsher actions of the government in surpressing militancy never come to light except in obscure reports by foreign NGOs... who themselves rely on second and third-hand reports as they aren't allowed to investigate themselves.
Contrast with Pakistan, where local journalists publicise little issues such as the plight of refugees from areas where the army in engaging in counter-insurgency, and start reporting how many civilians who stayed in the area died. The Saudi government doesn't need to worry about such jounalists, it can have them silenced and let what needs to be done be done without the people finding out.
So the grassroots issue goes down to the Pakistani populace being incapable of recognizing what is beneficial to their existence in the long run OR worse not caring about it. Its opposition for the sake of opposition to anything.