OK, maybe I'm dense (well, ok, I am dense) and I ask this with no sarcasim at all, but what are we trying to learn?
These stats are virtually useless to gain meaningful cause and effect results because there is no data to quantify what kind of kills they were, and that does matter. Our data is "kill" and nothing else, which is next to worthless for anything but the most broad and general conclusions. It completely leaves out the tactical situtation the kill occured in, but most importantly they completely ignore WHO the opposing pilots were.
Here is an exaggerated example. Lets say you have 20 axis and 20 allied players all of equal (and statistically average) skill. With that lineup lets say for simplicity sake that for the week they tied at 1000 kills each side. Now take 10 of the average allied pilots but add 10 total newbies but your total allied is still 20. Take 10 of the average axis guys, but add only 5, but the 5 you add are Shane, Urchin, Leviathan, Nath, and Toad. No matter WHAT planes you give the axis, those 5 guys are going to skew the stats against the allies. Remeber the guy that blew the grading curve in school? The same thing can happen in AH, only there is no way to know because of the nature of the data.
Therein lies the problem with delving too deeply into what the AH stats reveal. You can not quantify your data other than raw (and not terribly useful) numbers because you dont know what the circumstances were in which the data occured.