“Actually, I’ve never told a Catholic that he’s not “in communion with God,” in fact I believe the opposite.”
That is I think the main problem here. Protestants simply wouldn’t have the lack of class and tact, the extreme arrogancy it takes to make a statement like that. If one did, he or she would likely be severely admonished by his or her peers and rightfully so.
The Catholics by and large have no problem in this area.