Well, I can see how these stories are related, as both stories deal with the fate of children who we modern people presume are innocent.
If you're offering to describe the story of abraham as a polemic against child sacrifice, that rationalizes the existence and purpose of the story does it not.. I am thinking about that however, and I'm still not so sure about the story myself. Though some things about it are defensible, I'm not sure if abraham's level of zeal or compliance was the best for anyone to aspire to, at any period of time. Why should god test someone by telling him t do something that is wrong... if abraham would have said no, would god still like him? Furthermore, to extend to the the story as a lesson human hierarchies, the story does not really map well. If your boss or king or whatever tells you to do something that you'd rather not do and you know it's wrong, well isn't it far more just to protest what greater powers tell you in those cases