Beware of false christs and false prophets! Jesus warned us, The LORD said he will personally deal with those who are false, so listen to the one The LORD sent, that is Jesus Christ.
Matthew 24:24 For false christs and false prophets will arise and perform great signs and wonders, so as to lead astray, if possible, even the elect.
“This is my dearly loved Son, who brings me great joy. Listen to him.” - God the Father
As complicated as Rome's view of salvation may be, her debate with the Reformer's came down to one word: "alone". Sure, Rome believed that salvation was based upon the work of Christ, but she would not say that salvation was based upon the work of Christ alone. Christ alone, or solus Christus in Latin, may seem like a very small difference; one word! But for the Reformer's, it was all the difference in the world. Upon this one word (alone) the whole gospel depended.