Well I got 4 kills (2 GV 2 P51D) and 3 assists (all fighters) and only lost 1 plane while pulling too many Gs too fast and ripping my wing off.
I DID give baldeagl a proxy for that, though
So, 4:1 kill ratio, not bad (not counting assists!)
EDIT: Those are kills IN a -25, not OF a -25, just to clarify.