Column Pass Through Fire

[Xerxes77]

Doesn't this effect apply also to regular units in Line formation, regardless of whether the optional rule for Columns is selected or not?

From the manual: "Normally fire against a stack of units in a hex only affects a single target unit. However, when Infantry in Line formation is fired upon by Artillery, all such units in the target hex are affected by the fire."

If this is the case, three French battalions in line formation would suffer more casualties than a single Prussian unit in line, even if the total amount of men is the same. Should this be considered an issue too?