This is what happens to me, I dont die from the guy "I" killed's marty. anyways
1. I get hurt from marty and someone else kills me (a gun)
2. I run, then suddenly I see a glimpse of the grenade icon for 0.1 seconds, and before I can do anything, I'm dead. (Teammate/someoneelse has killed 'someone' which had marty)
And Martyrdom was a perk designed to help people that actually 'struggled' with the game, not to be abused by people that can actually play without it...
But what really gives me the shits is LastStand/Second Chance and Juggernaut, takes 3 shots with bolt action to kill em, most of the time someone else kills em.. (CoD5 W@W)