Okay, so how about I be generous and allow the qualification that we are talking about American men only.
Okay, well here is a link to a Pew poll on attitudes to abortion:
http://www.pewforum.org/fact-sheet/public-opinion-on-abortion/
Women support legal abortion by 59% to 38%
Men support legal abortion by 55% to 42%
That's almost within a margin of error in similarity.
To me that suggests heavily that gender is a fairly minor factor in the difference between acceptance of abortion and by extension empathizing with women who have unwanted pregnancies, not the radical difference you have been arguing it to be.
Maybe women and men have a larger intra-gender variability in opinions and empathy for others than you give the respective genders credit for.