In both countries, the educated population likes the religious leader less than the uneducated population. In Germany, most Turkish immigrants are from rather basic backgrounds and most Iranian immigrants are from intellectual backgrounds. It makes a huge difference. In both countries of origin, the population is split much more evenly than what you see abroad. AFAIK, about 50% support the religious strongman in both countries.
I don't live in Germany (nor am I a German national), but I have special cultural interest in the history of Turks immigrating to Germany. I agree: On the whole, overwhelming Turks that immigrate/d to Germany are not highly educated. They come to work in manual labor jobs, not as engineers or medical doctors.
For Turkey, election results. For Iran, no hard numbers, just fuzzy memory about articles I've read. What is clear is that the regime has supporters and not just those who benefit directly / materially.
Of course. It has actually staunched supporters. One cannot kill innocents in the streets by just the promise of money. So there’s religious ideology involved. However the percentage matters a lot here and even 10% of 90 million is a large number.