The issue is that you're pitting the potential (which, at the time of abortion, isn't capable of acknowledging the fact that it has or can have a life) of one life versus the rights of another to control their own life. Someone else is deciding what a woman can and cannot do with her own body, because of that other person's definitions of what is and is not life.
It's not a matter of empowering gender, it's a matter of allowing individuals to have some say in what happens to their life. Yes, the same would absolutely apply if men could/did bear children. The right to having a life doesn't mean a great deal if you're only allowed to have a life that is determined by the opinions of someone entirely removed from you. And pregnancy/birth are a considerably more personal and immediate impact on someone's life than the abstract of communal laws and norms, before anyone gets started on that.
As for adoption? I have to admit, I fail to see how it's morally preferable to give life to a child and then hand them off to an immensely fault-laden system to potentially drag out the rest of their existence hurt, ostracized, and forever wondering why they were abandoned; rather than simply stopping them from ever being a person to begin with, before they can be hurt or feel loss. But that's just my view of the subject.
And if it's viewed as being worth any consideration, a fair percentage of the very few people to actually utilize this option while it was still legally available (I believe the number was around 12 operations per year on average, for the entire country?) were women who had previously experienced extreme difficulty conceiving, and had sought help via fertility treatments. Fertility treatments which, coincidentally, have a disproportionate chance of resulting in twins.
So women who were otherwise more or less prevented from having children would get expensive and complicated medical help, finally reach a success, discover that they were pregnant with twins, and then be handed an ultimatum that they would either get more than they bargained for or have to terminate the entire affair.
So, yes, this ruling makes no sense because the moral authority of the Christian People's Party has decided that it is more ethically defensible to terminate two embryos than it is to just terminate the one while bringing the other to term, because abortion itself is still allowed (until they manage to get their hands on that as well, which they originally tried to do by saying that abortion laws are discriminatory against people with Downs).