The idea is to have the scores comparable to some degree between the games. Some games (such as Overgrowth or GTA V) don’t have dismemberment yet they score significantly higher than many that do, and as I mentioned frequently in the vids, wounds at the point of impact are waaaaaaaaaaaaay more important than rolling heads and chopped limbs. A game can still feel very nasty, gruesome, and most importantly, responsive even without dismemberment.
As for OFP - I did a review on Red River. Game definitely has potential (nice body damage responses and good disabled state) but there are a ton of odd activation issues and there’s no blood spilling at all.
As for BIA series, I reviewed Hell’s Highway. Sadly all games in the series have been lacking in terms of response though they have been marketed as gory and brutal.