Description from the FWE site:

Wasteland doctor: Fully restore crippled limbs, +5% Critical Chance bonus on non-mutant humans.

Wasteland surgeon: Restore any body part, limbs recover 2x faster. +25% Critical Hit DMG. (Prereq: Wasteland Doctor).

My question is about wasteland surgeon: +25% Critical Hit DMG, also just on non-mutant humans or on everything that moves?