False. They are added to your K/S and K/D and K/H just as any other kill. They don't score perk points for you though.
For proof, check out the score pages for LTARget for tour 91 (August 2007). A similar question had come up then whether proxies counted for score/rank. Since all of my planes are set to attack (the ones that can be, anyway), it was easy for me to get verification by having a friend intentionally auger near my hurri 1.
You will see that I had exactly one kill in one sortie, and note the hit percentage is zero, because I never fired a shot.
Tour 91 Fighter Scores for LTARget
Score Rank
Kills per Death + 1 1.00 1529
Kills per Sortie 1.00 851
Kills per Hour of Flight 9.32 180
Kills Hit Percentage 0.00 6457
Kill Points 1.00 5507
Tour 91 Statistics for LTARget
Fighter
Kills 1
Assists 0
Sorties 1
Landed 1
Bailed 0
Ditched 0
Captured 0
Deaths 0
Discos 0
Time hh:mm:ss 00:06:26
Rank 2996
So, yes, proxies count as long as you are still in your plane and not in your chute.