So far usage has been kills and deaths added together, done in this way perhaps may show 1 or 3 pilots sticking out in those airframes
There are always a few pilots doing much better (or simply just 'much more'), but the overall impact is still extremely limited for a fighter with more than 20.000 kills alone per month.
That means to get only 10% of all kills in the P-51D, you need to get more than 2,000 kills in it each and every tour. In th Ta 152H, only about 200 would be required.
Some actual numbers: The Player with most kills in
P-51D had 6,204 kills, that's 2.3% of this plane's total kills
Bf 109K - 3,587 kills, 4.1 %
Hurricane D - 242 kills, 17.3%
Ta 152H - 970 kills, 4.2%
Bf 109E - 699 kills, 23.9% (And yes, that's been you)
So your dedication to the 109E did leave huge mark on that plane's overall stats, have you flown the 51D to the same extend, it would have left almost no mark on it's stats, even when assuming much more sucess in it than in the 109E
EDIT: above % are slightly off, as I based it on total A2A kills, not all kills. But see my next posting.