I noticed that too. It's too bad its not real. I do respect the the fact that the Navy is working pretty hard to not overstate their kills.
I ran across something similar to this last fall when I read the book "Red Wings over the Yalu" by Xiaoming Zhang. I found that the author was so focused on correcting the overstatement of American kills over Korea that he missed the fact (for the most part) that he to tended to overstate the Soviet and Chinese kills. Now, to his credit though he did point out the fact, that I agree with, that the best way to get the closest to accurate count on kills is to study the loss reports for the given country. For example, the Luftwaffe will always over report its kills, and may under report its losses, but their internal reports on their losses are likely to be closest to accurate. Those are the numbers I would want to use to represent the number of German planes lost.