Ive got the sensation that rank is not useful in judging the skill everyone flies.
I mean if u fly conservative and u try to land safely, u have a small number of kill and so little death, u have a high K/D but sure your K/time on line is very small, u will never had a position in the first 100.
If u fly furball,u kill a lot but die a lot as well, your k/D is poor but u have a high K/time on line, and your position is surely higher.
Despite the fact that everyone is free to fly as he likes, what u think is the more realistic between two, and which of two would be encouraged with a good pointing system??
Anyway i agree that statistics are useful for personal use, to improve the way you flight, to know what are your improvement areas, and not to compare players skillness (almost not all)