How do you explain that uncorrupted human NPCs (Master) have a number of wounds bigger than 30? That is three times the wounds of a normal NPC.
This number is hard to reach even for a Chaos Space Marine PC and requires lots of additional bought wounds. I think the maximum number without mutations is 34 for a Chaos Space Marine and around 20 for a human PC, on the other hand the human Master-tier NPCs in Hand of Corruption have 35 wounds.