What are the Characteristics of a NT Christian?

[Mister Agenda]

I agree, many protestants do not think that Catholics are Christians.

YMMV. In my personal experience, I have never met a Protestant who said Roman Catholics were not Christian, no matter how strongly they disagreed theologically.

Try living in a state like South Carolina.

"Those poor Catholics think they're Christians, but they're idolaters who worship Mary and a bunch of Saints! Clearly, they're polytheists."

And I won't even get into the slanderous conspiracy claims about ongoing Catholic atrocities.