^What roshnak said.
I was mainly referring to the fact that headshots are encouraged in arcadey games like CoD, and I felt as if I were indirectly encouraged to make headshots in ARMA III, which differs drastically from traditional military convention. But yes, in CoD you're encouraged to make headshots to show off skill and get bonus points and achievements or whatever, whereas in ARMA III I felt encouraged to make headshots for practical purposes.