gigastar said:
Its a display of how good you are compared to others. You would like it if you were better than everyone else [http://tvtropes.org/pmwiki/pmwiki.php/Main/BraggingRightsReward]. And you wouldnt like it if youre lower than most, because its obvious that you arent as good as you think you are.
Once in Killzone 3 i somehow racked up 3 times as many kills as the nearest ally could. That was a good day.
WRONG.
Its a display on how much you kill whore per game and ignore the objective.
Let me give you an example.
In Team Deathmatch an average to good player will get 20-30kills and under 15 deaths.
Now in Demolition or Domination, by kill whoring and avoiding deaths you are prolonging the game time, time that you could of used to win the game. Most clans and teams will not look at your KDR to select you(Good teams anyways), they will look at you W/L Ratio. KDR does not show skill, it shows kills.
Next time you see somebody who has a high KDR, look at there W/L next time.