There are lots of things that make it hard to compare. first, girls have a higher pain tolerance. second, if you're going through puberty the chest is more tender. third the balls are lower down and more vulnerable to hard kicks and stuff like that. fourth, you can't compare it to what you don't have. fifth, if you've recently given birth, it will hurt much more (my mom didn't get a pump from the nurse, she was in pain and crying when nothing was being done to her chest). if my mom were to be kicked i guarantee that would hurt at least as much as being kicked in the balls, prob more (since no pressure hurt). So being hit in the chest normally does not hurt as much as being hit in the balls, based on what i know. Maybe something to compare it to would be cramps? Although cramps in my opinion is a different sort of pain it's a stabbing feeling down there from the inside of the body, vs balls is outside of the body, but both affect the abdomen.
I've got a big rack and have been hit both there and between the legs, and getting kneed between the legs was WAY more painful than being hit in the chest, I wonder if the pain is about the same for guys and girls when getting hit down below?
I've been hit in the boobs on many occasions and I can say from my experience that it doesn't hurt too bad. Don't get me wrong, it hurts but not as bad as getting hit in the nuts. I can't even think about how painful that has to be.
Multiple girls have told me that getting hit in the nuts is incompatibly worse than getting hit on the boob or between the legs. Also, an all-out but shot is significantly worse than natural chikd birth. If a guy isn't injured, it only hurts for 5 minutes or so versus an average of 8 hours of child birth, but it's biologically impossible for women to die from the sheer pain of natural child birth (specifically why the have so much higher pain tolerance than men. If they didn't they would die every time) and there are documented cases of women restraining their husbands and abusing their testicles until they went into shock and died from the sheer pain of it. Although most girls will kick a guy a lot softer than they could, which, while it obviously hurts, a sack tap or light flat-footed kick is nothing compared to natural child birth.
I think it should be getting kicked in the balls or giving birth. I've never seen a woman go to the ground and hold her boobs for 10 minutes because she got punched there. Sure it hurts, but there are a lot more nerves in a guys balls then in a girls boob. Boobs are sacks of fat while balls are sacks of nerves.
Are you crazy? I'm a martial artist and I've been hit in the face before (black eyes, cracked lips, etc) before and that didn't hurt even a fraction of how much getting hit in the nuts hurts (I got kneed in the nuts last night while sparring, and its still sore now).
Measuring pain between two genders is impossible, especially because I don't think I've ever seen a girl get hit in the breasts. I can say though, the same amount of painless pressure against a breast applied to a testicle could cause immense pain to the owner of the testicle. It doesn't take much for balls to hurt.