I'm using the "interpretation" given by the RCC catechism, by Roman Catholic priests and by various encyclicals. I've even posted those examples and linked to them.
You, OTOH, have only your skepticism.
Truth - 1
Rome - 0
No you are not. Don't try that bluffing and bluster with people who actually know better. That stuff may work amongst those "predestined" to hate everything Catholic and to accept any lies if it supports their hatred, but there are too many here who already know the truth. Those that don't have full access to it without relying on cartoon handouts and lying preachers. You are just making yourself look petty and foolish.
Oh, and by the way, neither the term "Alter Christus" nor "another Christ" appear anywhere in the Catechism of the Catholic Church. That means you are either ignorant (you just didn't know) or lying (you knew but said it anyway). Only you know which, but neither are very flattering.