Now that you resort to insults, its my turn.
your kidding right? 1% of fights occur over 15K? Do you tell your wife that your 2 inch's is really 8. 
Get a grip, you wouldn't know what your talking about anyway since you are so successful at lower alt, there are countless fliers that would not get caught below 10k and I engage many on a sortie that are well above 15k. 27k is not unheard of and more common than you may think, not a norm, but for you to claim 1% of fights occur over 15k is ridiculous, prove it.
Aww don't take the insults too seriously. I've already asked you to show films of your claim that so many fights occur over 15k... your answer is what, to ask me to post films? lol.. maybe you should follow your own council and get a grip.

Were people to care enough to spend a minute to post, they'd tell you the same thing I'm telling you: almost all kills occur below 15k.
Think about it: If I'm successful at getting kills below 10k, who am I killing? In other words, in order for me to get kills below 10k, there must be people there to kill.
Now, I get about 10 kills per hour, which is by no means exceptional but it's not on the low end either. Obviously there's plenty of targets below 10k.