Not really, the shockwave from an explosion can completely kill you, even though you'd show no external damage, and since the kinetic energy increases with the square of the speed, an object doubling its speed has four times as much kinetic energy, thus swinging the beam with as much force as zod can, the beam generates much more force than he could with a punch.
Even if the beam desintergrated on impact (your pillow analogy), the resulting force will still hurt; like smashing a bottle on someone's much harder skull.