نماز کو سلام پھیر کر ختم کرنا
You are correct. In Shiites hadith tradition, Facing sides is not an obligatory act. They say asalamalikum ….. then they say takbir 3 times. In general, there is no difference in obligatory acts of prayers. While comparing different sect, we need to see how they interpret things. The common factor is they also interpret things according to Quran o Sunnah + Hadith.