It's a bad comparison. The 'slamists idea of martyrdom is by killing a bunch of innocents and perhaps dying in the process. In Christianity, martyrdom comes about from turning the other cheek while proclaiming faith in Our Lord, even to the point of death.
mohamhead tells his wolves to slaughter as many lambs as they can while Jesus tells his lambs to turn the other cheek. The footsteps we are asked to walk in are impossibly difficult to follow, and yet, as sinners seeking redemption, we must. I wouldn't be too quick to judge Christians for their failure to die.
However, though the fedayeen or shahid definitely are more interested in homicide than in suicide, many thousands if not ten-thousands of them are willing to off themselves if they can take enough kuffars with them.
They're wiling to die. They expect Paradise that way.
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