[Modernman]

But Roman Catholic dogma, properly understood, as taught in the Catechism, explained by soon-to-be-pope Ratzinger's seminal work, will lead you to a false understanding of salvation, which, assuming we are destined to hell if left unsaved, leads you to hell, according to reformed Protestant doctrine, to which I happen to adhere.

But if all that is required to be saved is faith, why would Catholics go to hell?

That is to say, if a person believes in Christ, why would he go to hell if he believed something else was required on top of that belief? He still believes in Christ, even though he might hold some extraneous beliefs.

[rwfromkansas]

If you don't understand Christ rightly, you don't know him at all.

And, those extra beliefs exalt man in the place of Christ.

Therefore, it would lead to damnation.