I'm simply saying that instead of making rankings based on kill to death rates make it kills-deaths (like the moh score) multiplied with your kill to death rate so having a high kill to death rate means your score increases much much faster. If it was just kill to deathrate all the top rankings would just be people who hardly touched the game and maybe has 20 kills and 1 death giving them 20:1 which is kinda hard/impossible to have if you have gotten 1000 kills.

Example:
A: 1000 kills, 200 deaths. Score: 5/1 (or just 5) x 800 = 4000
B: 4000 kills, 2000 deaths. Score: 2/1 (or just 2) x 2000 = 4000
So because A has a much better kill to death rate his score is the same as B's even though as MoH style score player B should have had more than twice as much because he played much more.