From what I could find your Church does not discriminate between what you are calling the words of men and the red letter words. From the CCC:
105 God is the author of Sacred Scripture. "The divinely revealed realities, which are contained and presented in the text of Sacred Scripture, have been written down under the inspiration of the Holy Spirit."69
"For Holy Mother Church, relying on the faith of the apostolic age, accepts as sacred and canonical the books of the Old and the New Testaments, whole and entire, with all their parts, on the grounds that, written under the inspiration of the Holy Spirit, they have God as their author, and have been handed on as such to the Church herself."70
106 God inspired the human authors of the sacred books. "To compose the sacred books, God chose certain men who, all the while he employed them in this task, made full use of their own faculties and powers so that, though he acted in them and by them, it was as true authors that they consigned to writing whatever he wanted written, and no more."71
107 The inspired books teach the truth. "Since therefore all that the inspired authors or sacred writers affirm should be regarded as affirmed by the Holy Spirit, we must acknowledge that the books of Scripture firmly, faithfully, and without error teach that truth which God, for the sake of our salvation, wished to see confided to the Sacred Scriptures."72
I would certainly agree that on a given subject certain scripture may be more relevant than other scripture, but not more true. I would also have to agree with the Church here that the Holy Bible is the word of God "whole and entire". The Bible does not contain words of men that are of intrinsically lesser value than the red letter passages.
Not insofar as their inspired status is concerned, but liturgically only the Gospels are on the altar, and only an ordained person can read them in the church, while everyone is standing. Conversely, all other parts of the Bible are read by laity while the congregation is sitting.
The Orthodox have a saying lex orandi, lex credendi, loosely translated "how we pray is how we believe." In other words, the Church liturgically sets the Gospels apart and above all other scripture because it considers the Gospels apart and above all other scripture, through which all other scriptures is interpreted and reconciled.
The Divine Liturgy or Holy Mass is not just a "service" as the name implies—it is the life of the Church.
Catechism is a handy book that answers the obvious questions. But it does not give you the insight into the orhtopraxis of the Church.
The Church has not given a definition on this presumably because the idea that, for instance, Nehemiah to be as authoritative as the words of God Incarnate is so ludicrous so as to be not even worthy of consideration.
I mean, really. If you have Jesus Christ Himself standing beside Ezra, who are you going to pay more attention to?