Christianity and Islam from a Jewish Perspective (Ishmael, Esau & Us, Episode 2)

From Judaism's perspective, Christianity and Islam are both false religions, aberrations of the original, pristine Torah. On the other hand, two undoubtadly great civilizations emerged from them, that have not only advanced mankind in different stages in history, but actually spread the word of God to the farthest reaches of the world. How can these two claims be reconciled? Dedicated to the elevation of the soul of Tzillah bat Shlomo Dov.