Statistically wise you are right. In this game though it seems those with a higher kd not only have that high kd, but they play a lot more as well. This means that there is a smaller group of above average players that impact the average kd. If you were to see what the average kd of a player is, it would probably be around a .9 or maybe even lower. Basically the group with a higher kd makes up the majority of the kills so the average player will actually have a lower kd than what you would think statistically they would have