You are right there but you miss the bigger point here. Countries can adopt roughly three postures. Pro, neutral or against. Take UK. It has a pro preferance to Poland, Estonia or Latvia attendant to being fellow Europeans. UK has neutral posture toward Pakistan and against Iran. The manifestation of pro preferance (or brotherhood) with Poland etc is seen across the board. UK deploys soldiers to Poland as part of NATO. UK has taken millions of Polish workers - good, bad and ugly. So if KSA has a preferance for Pakistan where is it exactly? If you are selective then your not being preferential. The two have entirely differant meaning. Brotherly suggest doing something even when you get a better deal elsewhere. That is preferance. If KSA was preferantial to Pakistan it would select Pak even when it could get a better deal elsewhere. I hope that make sense to you.
If KSA or GCC pick Indian worlers because they are better where the hell is the brotherhood then?