The only differences between Su-20 and Su-22M3 (M4 in Red Dragon) are, the latter used much superior Kh-25ML replaced the Kh-23, and has a slightly better ECM (Bad vs None) and Autonomy. All of these cost 10 more points.
Weapons
Weapons
Type
Autocannon
AGM
AAM
Name
Twin NR-23
Kh-25ML
K-13M
Caliber
[AoE] 23mm
[HEAT] [SA] SALH
[AoE] [F&F] Infrared
Ammo
x 160
x 2
x 2
Range
Ground = 2100 m Helicopters = 1400 m Airplanes = 2100 m
Ground = 3150 m Helicopters = N/A m Airplanes = N/A m
Ground = N/A m Helicopters = 1750 m Airplanes = 2800 m