It helps decide weather or not the legal response if any is reasonable.
> whether you think that it ought to be or not.
I was not trying to comment on what I think ought to be.
I am trying to make that judgment and help others to do so.
> and the second says that you're not trying to comment on what the law ought to be.
If I am trying to make a judgment, if I am in the process of reasoning through something I do not know what something ought to be.
Good analogies are those that help people reason through a problem and come to the correct conclusion, not a tool to sway people to your opinion.