still seems strange that 2 jet fighters are that powerful against GDR. I'm fairly certain one of the promotions beefs up their air defense.
Nope, one of the mods give it an air defence ratherthan beefs it it in fact debuffs the GDR....
here are the stats of your fight (just recreated from save) ...
The first jet fighter on king has a modified attack against you of +12 which does 55 damage. On average it would do 48 so a lucky first attack.
The second jet fighter swoops in at +18 which does 66 damage when it should have done 61 on average.
So in total they did 117 HP damage but on average would have done 109 which is still death even at 100% (although you were at -1 for some initial damage.
IF you were not AA upgraded the irony is they would have done on avergage 45 HP of damage (-8(21) -5(24)) but then you would not have done any damage to the fighters which have taken 20 and 17 HP from your AA.
I still think it is a bad design.
If you want to win just stop fighting and trade. not sure what you are so upset about (apart from wanting to pwn with a GDR)
EDIT
and great screen shot you see the non AA GDR defends 30 strength better against air! You were fighting at -23. The joke is you have no choice but to accept an AA upgrade
Using your AA guns as your defence armour is a stupid design

<<<--- firaxis AA designer