Comparison are often judgmental, but not always. Sometimes they can make a good point or illustration. Indeed, the parable you cited is a comparison; so is Matthew 21:28-3.
How about this comparison:
- one person believes that Joan Chittister is a heretic
- another person believes that anyone who says "the Holy Spirit proceeds eternally from the Father and the Son" is a worshipper of a false God
Which of these two opinions is more judgmental?
Considering that only one of these two statements actually addresses high theology (at least, as far as I know Sr. Chittister hasn't contradicted the dogmatic statements regarding the Structure of the Trinity or the philosophical interaction between the Natures of Christ), while both pretend to, I would have to say that the second statement is an academic opinion while the first is simply an ad hominem
. Liberalism is not heresy, though some reactionaries may want to pretend it is, ditheism or sabellianism, on the other hand, are. The former is merely a political/social opinion, the latter a contradiction in the philosophical structures that are the essence of Christianity.
Also, in the first statement, one is picking out a particular person and personally condemning her. Who can know her heart, her convictions, or her faith save God alone? In the second statement, on the other hand, one is simply making an objective philosophical analysis in the context of academic theology. The second statement is that this particular philosophical statement (the filioque
) logically leads to a philosophical construction of a deity that is different than the one defined by our philosophical constructions and, therefore, logically a different deity. Now, as to which deity is 'the One True God(c)' and which deity is a 'false god', well, it's a pretty silly argument, but it's directed at philosophical constructions of various deities rather than actual people.