K/D is important, but whats more important is comitment and strategy, you need to be commited to your squad, play the game like its RL and pray not to get hit.
Deploy military strategies, dont just "attack" the flag, get ur squad behind the flag u just capped, get them all in the "map" (m key) and then explain your idea/strategy, ask for suggestion, plan it, execute it, own it!
That my friend is the greatest "winning" tool youll ever find, its more stronger than an M4! - but this all comes down to the squad, if your playing with not so great teamplayers then it wont as much.
oh and one thing i have learnt in my PR experince, DONT UNDER-ESTIMATE YOUR ENEMY....Always expect the unexpected, keep on your toes and use instincts, before i used to walk into ambushs, now i go around them and flank
