An article in a Jewish publication points out the views of the classical Jewish theologian Maimonides, about the relative merits of Islam and Christianity, Muslims and Nazarenes.
While contemporary Jews and their foolish Christian allies go on about the evils of "supersessionism," Maimonides made it clear that for Jews, Christianity is pagan idolatry.
Islam shares this view as well.
All the kowtowing and accommodation only goes in one direction.
Back in the 12th century, people told the truth. Now, ecumenical prevarication rules the day.