When it comes to kdr , yes it's better to be positive than negative cuz every time you die they get points, really depends on what you play. In control i take a lot of deaths due to taking zones. Then you have people who won't get into the fight due to kdr, they sit back and camp with snipers and leave game when they are on a weaker team And then there is those who took a hit on kdr when they first started playing but are really good now with a neg. kdr