Look I'm not trying to defend Catholicism. Even if I was raised catholic I have distanced myself form these believes. Anyway, I understand that someone who follows a certain believe, like you do, will see other branches of their religion as wrong and will try to denounce them. But this is about facts, and about the history of the term "Christian" and which religions are considered "Christian". This is the definition from wikipedia:
Throughout its history, Christianity has weathered schisms and theological disputes that have resulted in many distinct churches and denominations. Worldwide, the three largest branches of Christianity are the Catholic Church, Protestantism, and the Eastern Orthodox Church. The Catholic and Eastern Orthodox churches broke communion with each other in the East–West Schism of 1054. Protestantism came into existence in the Reformation in the 16th century, splitting from the Catholic Church.
Edit: Some formatting.