The question is, how do we indentify who is true and who is not? I'm convinced that Catholics are decieved for the blatant transgressions of the law of Christ that they display in the simplest everyday ways. You call your ministers "father" when Christ explicitly teaches not to do that. You create idols to represent God when His word explicitly teaches not to do that. You pray to dead people which is just weird and divinize the mother of Jesus as if she wasn't a sinner like the rest of us.
"Whosoever transgresses, and abides not in the doctrine of Christ, has not God. He that abides in the doctrine of Christ, he has both the Father and the Son."