Thanks for pointing this out. The log parser it seems is awarding kills to gunner/observers as it should. It has to do this to account for kills by gunners on bombers. I went through the actual logs kept by HTC after you posted this and his name does not show in the list of kills for the Allies.
We will look into this and see if it can be fixed to show only gunners (not observers) on the ahevents.org logs.
Thanks