Broken Units Suprisingly Don't Take Heavy Casualties

[MisterMark]

As the title implies... once a unit is broken, I'm surprised that repeated attacks on such units result in very few casualties as compared to when the unit was un-broken/disrupted or even un-disrupted . 

For instance, if you do an air strike or artillery strike on a unit that is unbroken you might inflict double digit casualties (depending on terrain, etc).  However once that same unit becomes broken, repeated attacks in an effort to eliminate it, usually result in 1-6 casualties per attack, despite hitting it with overwhelming fire power.

You would think a unit that has become broken would take even heavier casualties when under fire... completely panicked and unmotivated troops would seem even more vulnerable.  

Does that not seem counter intuitive?  Any one know why this is the case? 

Thoughts?

-Mark