The damage is low because cloth armour is very good at stopping auto-pistol rounds, while combat armour works well against gauss rifles.
Let's try shooting Pod, in cloth armour, with a gauss rifle a few times.
The AR of the cloth is half round down because the gauss rifle is ap - that's 2 points of armour so the gauss rifle will inflict the best 2d from 4d rolled.
The five examples:
1) 5 5 4 1, so that's 10 point get through.
2) 6 6 3 3, so that's 12 points get through.
3) 6 6 4 1, so that's 12 points get through.
4) 3 2 1 1, so that's only 5 points get through
5) 4 3 3 1, so that's 7 points get through.
Note the same happens if you use a HEAP snub pistol
The person firing could fire a burst for an additional 2 damage dice, could score an exceptional success for an additional damage die, take aim at an unarmoured location, or all of the above.