Morale shock in cRPG is pretty much non-existent.
When you arent as dearly attached to your life as in real life, you can do suicidal counter attacks more often and stand your ground.
At the worst people will retreat until they form a group of soldiers that can easily stop a cav charge if they have a numbers of pike at least equal to their file number.
A cavalry charge of one rank deep, even going at top speed, is very to stop in cRPG, the horse just stops or die from a single poke, and the horse itself doesnt interfere with the pike formation when dying on them.
It would be equally as hard to form such a charge as it is easy to spot from the defender's point of view and interfere with it.
My idea of an efficient charge would be more like a harrasing formation ( doing like in cRPG battle then ) or multiple single/double file charge in the flank or back, charging exclusively if the point of impact isnt covered by more than 2 or 3 pole wielders, and never bet all your cavalry in a single charge ( doing a hammer and anvil delayed double cav charge could be interesting to see, if the defenders arent aware of the second vague! ).
And im not even talking of the infantry role in this, as they can draw attention of the entire opposite army if done properly, letting cav organize a charge or just pick some target easily.
I'm curious if some old strategus players could share more light on this matter.