Oh... I understand what you call Christian is Protestant. Well not saying anything bad about them, but the original name mean they protest against the way the Catholicism express themselves, so they separate away from the Catholic church and consider themselves true christian. Many of them hate the word Protestant. But they are quite the same, confessing to god - well the catholic want them to say it to a father, it more like a psychology thing, you need more courage to confess something to another person than saying it by yourself - . We can consider any forms as a form of Christianity if they acknowledge Jesus Christ as a prophet. That is the start of Christianity. The rest i would say " Tomato " " Toma to" it is depend on how people feel more comfortable with. The catholic is old school, they like to reenact and ceremony. There are some misunderstanding between sides due to poor knowledges.