If Überpilote received a kill of NewRAFGuy in the logs, Überpilote did indeed get the kill. However, in NewRAFGuy's logs it shows that RandoGerman shot him down (Was shot down by RandoGerman). What that means is that RandoGerman was the last to put rounds into NewRAFGuy, but the kill was awarded to Überpilote.
Hopefully, that brings the clarity to at least an oil level.