Which other visible Church has existed since Apostolic times, with a non-contradictory body of teaching and an unbroken line of Apostolic and Petrine successors?
The Lutherans? Methodists? Presbyterians? Episcopelians? Evangelicals? Fundamentalists?
The Jewish Churches which accepted Christ. Jesus was a Jew as well as His disciples. As far as "with a non-contradictory body of teaching and an unbroken line of Apostolic and Petrine successors", I'm not sure what that means (it's certainly not a Biblical concept) but when you show me 12 Catholics going out in the world (from town to town) healing the sick, restoring sight to the blind and bringing the dead back to life we'll reopen this discussion.