To be honest, my self res makes me stronger most of the time because I do not have to fear dying, so if I'm out racking up kills and don't have to turn and run when I'm weak, allowing me to get more kills. But that's just how I play using it.. But you probably don't die because you sit in the back sniping, while your team mates do all the dirty work, then you panic Titan slam a dreg or two to create some orbs.