how does it work?
Very simple:
For each scoring category, players are sorted and assigned a rank#. Best K/D in fighters is #1, second best is #2 and so on. Same with K/S, K/H and Kill points. All those rank numbers are added. Player with smallest total # gets fighter rank number 1.
The same is done with bombers, attackers, GV.
Best overall player is the one with lowest total sum of fighter, attacker, bomber and GV rank.