Thanks a lot for your quick response Dave.
My personal take on it is that NPCs' KPIs should be removed, since they could mislead readers, but I see your point. If I wanted to keep some value as an indicator of their abilities I would go for a unique value, no need of symmetry, something like ORI (occupational risk index, pun intended) with just one number to reflect the danger of the threat and the severity of consequences when dealing with them . Everything else included in the description is ok and enough. Maybe highlighting some specific reactions Manager can access to when Employees deal with those specific members of the staff could flesh them out and make them unique. But, all of this could go far from your core mechanics.