You better be goddamn kidding.
As long as you go positive you have done your job for the team. Doesn't matter if it's by 1 kill. It's still a contribution.
This obviously does not apply to objective modes, If you can capture a circle and die, then do it.
Anyway point being is. just play the game to win, you'll indefinatey enjoy it more the less you care about stats.
Classic mode is same hits to die like Uncharted 2 mode.
I suggest you play more wary and be a 'sideliner' when shooting, avoid melees and keep a distance when shooting.
WLR > KDR
FUN > WLR > KDR
Fun? You mean the band?