RE: Rand believed that man’s only moral obligation is to himself and to those to whom he freely obligates himself.
Given that Ayn Rand does not believe in a moral judge, if a man freely obligates himself to kill another person because he believes it is a moral obligation, I am not sure if that can be called better or worse given the foundation of her worldview.
That's an absurd distortion of a simple statement. I haven't seen anything from you yet that indicates you have any idea of her, as you call it, "worldview".