Those who need this book like the bird brained Duck are the last to read this blunt assessment.
If you do not have the time to Read The Great Divide by Alvin Schmidtt Sultan in terse terms reminds us Mohammad is not and should never be confused with Jesus or Moses. From this starting point we see the imprint on the societies created by the followers of different religions.
The familiar refrain from the religious fanatics is about the decadent West. I am not bothered by pornography or a gay coworker. Smacking planes into office buildings and beheading people in snuff films is not exactly moral. The above is not a jab at Muslims like Stephen Schwartz who has never minced words about terrorism and gratuitous death as a publicity stunt.
The book is decent reading but you can likely do better with Falachi.