Well, I read the passage you quoted and made my assumption based on that. But that is not scripture, though it's cute. So I'm not sure how you draw this over your religion thinking it means favor is due or whatever.
I don't see the favor in dying (not successful) religions like paganism, Buddhism, and SOME forms of Protestantism. However, I do see the favor in a religion as successful as the Catholic Church.
Well, Catholicism is a successful body producer, anything beyond that is at best argumentative given it's past and it's distraction from the original gospel. Catholicism is no more garaunteed life than the Budhists I'm sorry to say. Christians have that promise but only so long as they don't stray from the true foundations of faith and onto the same path that Catholicism started out with. Don't forget, the sects that formed to make yours precursored their formation into Catholicism by persecuting and anihilating the Donatists for preaching against their dabblings with pagan religions of Rome. IE their first major noteworthy act was to reject one of God's ten commandments and annihilate a group of Christians that took them to task for it. That's the historical record. It isn't the Catholic record; but, then it doesn't make good propaganda, does it.