Comment by slumdev

To be a little more precise, Catholicism teaches that every person in Heaven is a Catholic (even if they weren't necessarily a Catholic on earth.) It admits baptism by desire and the possibility of salvation of those who are invincibly ignorant.

But, at the same time, Catholic tradition has always maintained that even most Catholics end up in Hell. There's even biblical support for the idea in the "wide"/"narrow gate" language of the Gospels.

So, if Catholicism is the one true Faith, and even most Catholics end up in Hell, why would anyone reason that those outside of the one true Faith have good odds?