By the way women needs less neoprene to keep warm compared to men... beacuse of more bodyfat I pressume
How did you conclude that they need less neoprene? Individuality aside, the general tendency in and out of the water, I have gathered from countless experiences and personal accounts (women), is that women tend to feel uncomfortably cold easier. I know the fact, that "in general" women have more body fat, but that is just one factor in the sensation of warmth.
I regularly see guys hanging out in the cold, expressing comfort with the water temperature, wearing shorts in winter, etc... but that does not fall over to experiences of women towards the cold (once again, odd individuals aside).
I have explored this at length with women, in conversation, and it came up that possibly men were just generally trained throughout life to accept the discomfort more readily. I don't think that totally explains it, but certainly that is an added element. One thing that seems to be quite common is the idea of women having thinner blood. Another thing, is cold adaption. If men are trained to accept the discomfort, then they will subject themselves to it more often, which essentially can act as a training of their body, which adapts to this common discomfort.
Basically, if you are a lady, I would not put much faith in the concept that you need less neoprene as opposed to more. Just ask some of the experienced female freedivers. There is certainly going to be the odd one that is an exception, but I think you will find the majority follow what I am saying. Maybe it is important to compare people of similar physique. Although, as I mentioned earlier, there are many factors that affect the sensation of cold.
Actually out of interest, maybe we should start a thread and poll of what men and women are comfortable in with suit vs temperature.