“I have actually seen a number of threads posted by catholics that took an offensive(v. defensive) position towards evangelicals/protestants.”
I have seen it too. It is my opinion that non-Catholic Christians do this more than Catholic Christians. If you think otherwise, fine.
Freegards
I have participated in more of these debates than I can even remember and I can say without hesitation that I have NEVER seen ANY Catholic even suggest that Protestants would be denied Eternal Live in Heaven. However, I have on a great many occasions see Protestants not only suggest this, but actually declare it with regards to Catholics.