Yes and no.
Chariots with blades on there wheels were excellent at charging and piercing through enemy formations composed by lightly protected men (or non at all). The problem was there manoeuverability once they were enveloped by enemies, they just couldn't move (=defend), they needed plenty of land to turn around.
If they lacked backup they were wasted pronto.
So chariots are conceived for piercing formations much like a spearhead and making the enemy flee before them, the ongoing disorder will make the enemy tramp all over each other. But the chariots must have infantry right behind them to support them and breach the enemy lines.
That's why I think A= 4 is ok but D=4 is not good. Egiptian chariots were devised to fight on flat land like the phallanx, not on hills or rocky areas where they just cannot manoeuvre unlike the roman legions which could.