Isn't christianity the one that has martyrdom at its core? Jesus was martyred for our sins after all. Christians can’t really be trusted not to sacrifice themselves at the drop of a roman helmet.

Or not. Perhaps, we understand the nuances of that because we were raised in a christian culture, but don’t understand the nuances of martyrdom in islam because we weren’t raised in a muslim culture? I know that’s true for me, i assume that’s true for any non-muslim who claims stuff about the core of islam.