While there are obvious differences, There seems to be similarities between fundamentalist Christians and fundamentalist Muslims. Both see their scriptures (Bible, Quran) as without error and both interpret them literally, even the parts encouraging violence against outside groups. Fundamentalist devotees also seem vulnerable to political exploitation.
On the other hand, moderate, contempletive and progressive groups in both religions teach and encourage peace, non-violence, compassion and inclusion. Progressives groups find increasing common ground with agnostics and atheists. They also seem more independent.
Religion helps many people, but more and more people seem to be finding similar help outside traditional religion. Is humanity slowly evolving beyond traditional approaches to religion, and is that a good thing, overall?