In general, if you ever been in a serious relationship with a woman, there is the understanding there are much stronger emotions tied to even the most instinctual aspects of the relationship (aka sex) than for a man. For example, in the most blatant of terms, many men can just have sex without there being this strong emotional connection or feeling behind it. Many women, on the other hand, most of the time, like to have and feel the love, the emotional, the compassion, and passion behind the love-making.
You have to consider being a part of the organization of Jehovah's Witnesses as being in an extremely unhealthy and very damaging relationship. Ever see a talk show and wonder why (usually) a woman will stay in an abusive relationship typically more so than a man? It has nothing to do with logic or intelligence, rather women (in general) are in touch with their emotions better and the ties that bind them are stronger.
Enter what the Watchtower Society controls and/or manipulates - The BITE model:
Behavior
Information
Thought
Emotional
While there is an emotional section specifically designated, a person's behavior is strongly tied to their emotional state as well as information and your thoughts can be of an emotional nature. Having the Watchtower control and manipulate emotions the way it does, many men may be able to just disregard or tuck away much of the emotional grief or loss associated with the Society being wrong, for women, for many of them, you're taking about never seeing family, friends, presently and the future "promise" of the Watchtower's interpretation of a paradise on earth with the living and dead loved ones again - The emotional grief may be just too much as the emotional investment was much greater for them; not that men don't have the same losses or feelings - Just that it is stronger, deeper, and more encompassing for women in many cases.
Again, in general, the emotional connection and bondage is much stronger for a woman - As would be the heartache and loss on an emotional level. Ever heard of someone dying of a broken heart? It happens.
Not to forget also the organization 'cripples' women like they should be viewed in a 1950's sitcom. They do not give the illusion or feeling of power to women as they do to men (This ironically enough helps in a small way to leave the Society). They condition women to believe you need to look to their leaders. Even at the bottom of the barrel, men are "at least" the head of a woman in any adult relationship and interaction (Including preaching door to door, prayer, and decision making). All those subtle and not-so subtly items, consciously and subconsciously, bubble to the surface when you’re going to make, or think about making, a life altering change as leaving the Watchtower.
There are exceptions for both genders and rules are broken constantly, but in general, overall, I believe the above to be the causes of the difference you (and I) have seen and experienced.