StSanta... I don't see that as a viable direct comparison. There are a couple reasons.
1. Aside from the G10, there is the G6, G2 and F4. AFAIK, these all have similar flight performance and all have cannons for killing.
2. Aside from the 51D, there is the 51B. These have similar flight performance, but the 51B has reduced killing ability with only 4x .50 caliber MG.
3. Americans are brought up thinking the 51D is the be-all, end-all of WWII A/C. I would be willing to bet every American AH newbie grabs a 51D a few times before switching to the Uber Chog or the UFO N1K. The 51D has 0.914 KD vs. the G10's 1.152 which supports his theory somewhat.
If you take all models of the 109 K/D against all models of the P-51 K/D, the 109 has more.
G10 - 5536 / 4806
G6 - 1473 / 1380
G2 - 1379 / 1019
F4 - 1222 / 1501
TOTAL - 9610 / 870651D - 6361 / 6962
51B - 1205 / 1199
TOTAL - 7566 / 8161diff - 2044 / 545
So you see, there is still no reason the P-51D should be perked. And, by my same logic, the 109-G10 need not be perked either, as it too is not seen in endless droves. (Even though I hate the G10

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Midnight CO412th FG "Braunco Mustangs"[/i]
The 412th is actively seeking P-51 Mustang pilots. E-mail me for more information
davidl@splusnet.com "You tell them I'm coming.. And Hell's coming with me!"
-Kurt Russel Tombstone[This message has been edited by Midnight (edited 05-03-2001).]