All snark aside, yes, they are. Groups like ISIS represent some of the most fundamentalist social groups in Islam.
There's a tremendous amount of crossover like gender, both conformity and roles within society, how women are treated, views on homosexuality, crime & punishment, etc. It's a long list of similar things.
The big difference is whether or not God incarnated himself as a mortal being. Obviously, Christians say yeah that happened and Muslims say no, that didn't happen (but Jesus was a wise and honored profit).