You are correct. If Roman Catholics are going to address Protestant theology, they must address it in “Protestant” terms. To argue with a Southern Baptist about the authority of tradition, the early church fathers, or the apostolic succession would be a waste of time. Southern Baptists do not place much faith, if any at all, in those doctrines. If Roman Catholics are going to dispute with Southern Baptists about doctrine, Catholics must confine their arguments to the Bible, as that is the only authority that Baptists recognize. One might dispute the three issues mentioned above with an Anglican, but to argue with a Baptist about these issues is futile.
The purpose of the article is to teach Catholic theology.