Well said.
If you breach the subject of Christianity in a location where there are people of different faiths and those of no faith you can expect that all responses will not be positive. It isn't persecution for someone to give their opinion or respond out of their experience. If someone is abusive or ugly to you because you are a Christian alone that is persecution.
I don't think the large majority of Christians within the United States really understand the idea of persecution. That last sentence in your post, RumpleTumbler, is probably the most simple version of what persecution really is -- at least where Christianity is concerned -- that could ever be put to paper.
One thing I must point out here, though, is the idea that few Western Christians really are persecuted in the first place for their faith. By Biblical standards, being called names and otherwise insulted, is not persecution. Being tortured or murdered for your faith is what the Bible refers to, for the most part, when it talks about persecution.
To keep this post on-topic though, I think part of the reason a lot of people use sayings like those listed, is partially due to being badgered by Christians to the point they don't want to hear it. And frankly, I think part of the reason so many people don't want to hear it, is simply that a lot of Christians are not the examples they should be of the religion they preach. I mean, Jesus believed in righteousness, not just faith. When asked by other Jews how to enter the kingdom of Heaven, his response was universally, "Keep the commandments" or some variation of that sentiment. In my own studies of the New Testament Gospel accounts, I find very little mention, by Jesus himself, of "Believe I'm G-d and I'll take you to Heaven". I find a tiny bit of that in a couple places, but the majority of what he taught alluded to keeping the Torah (the 'law' in the KJV New Testament) as a means to salvation.
Yet I find very little in the way of such keeping of G-d's laws on the part of a great many Christians. This lack of righteousness is not conducive to many people wanting to hear more about Christianity. The feeling many people have, is like what James said:
Yea, a man may say, Show me your faith without your works, and I will show you my faith by my works.
So as far as the sweeping generalizations go, I think many of them are founded in some truth. People were burned at the stake for the sake of Jesus, and people were murdered for his sake in the Crusades. This kind of spreading the Gospel, per se, is directly contradictory to what Jesus preached and taught. If Christianity is going to thrive, it must follow its leader's commandments. If it does not, it is not real Christianity, because it is not 'Like Christ'.