With many weapons the damage values seems to be not working correctly. For instance when you shoot a Macher Rocket (wipeout) on a slammer up he will explode instantly but when you hit him with a bomb with higher damage values only his tracks will get damaged:

GBU12 : hit = 5000
Macer AG: hit = 2100

The RPG42 gets described as an light launcher woh only can damage the tracks of tanks but you can one hit kill the Kuma for example, his hit values are under 1000.