I don't know when this started, but I noticed it when I was checking the damages of the nature guns. Medics are having their damage reduced by 1 from base, so that Citizens actually deal more damage than them.
For example, I had a medic shoot me with a watermelon gun and it dealt 7 damage, then I had a commando shoot me and it did 9.
Then I had a medic shoot me with an LR Pulsar and it did 3 damage, then a citizen shot me with one and did 4.