BTT - without context the data is really meaningless, and especially when condensed into statistics.
take just me an my friend:
We often play together. He come from starcraft and manages his fleet very tightly, having a good k/d on most ships.
I in contrast just put my shipyards on auto, form a giant ball'o death and plow my way through the systems.
This means that my k/d is much worse, and the long range types get most kills. I also often do suicide runs with 200 bombers, where 200 bombers kill 1 command station or other building and die in the process.