I've noticed that there's a weird tendency for anti vehicle weapons, but less often anti infantry ranged weapons, to get the Concussive tag. What the bork?
Someone on these forums made an off handed reference to them applying to vehicle crews when struck. This reminds me of the "crew shaken" "crew stunned" results. Should krak grenades, battle cannons, etc. stun the crew of a tank?
Certainly gives a better use for Iron Jaw and such for tank crews, and gives ork and maybe CSM crew a slight edge.