No.
You are saying that the word “necessary” is binding, entails obligations, is open to interpretation, and is discretionary. How is the word “necessary” defined? What is necessary for me may not necessarily be necessary for you and vice versa. The same is true for the verb “consider”. When I consider, I do it in one way and you do it in another, so it's discretionary as well.
Of these two words, how can we say that one is stronger than the other?