A Christian is a person who has been baptized. It is anarchistic to define a “Christian” on the basis of subjective states of mind or emotion.
“Can. 96 By baptism one is incorporated into the Church of Christ and is constituted a person in it with the duties and rights which are proper to Christians in keeping with their condition, insofar as they are in ecclesiastical communion and unless a legitimately issued sanction stands in the way.”
http://www.vatican.va/archive/ENG1104/__PC.HTM
I don’t even know which Marian doctrine is the “fifth.” I’ve never seen them numbered.
Fifth Marian dogma would officially declare Mary to be coredemtrix,helper, and advocate.
So if a persons not baptized their not saved? And what of the person who doesn’t have the chance to be baptized but believes Christ? Saved or not?
Even a blind, Protestant squirrel can find a Catholic nut every once in a while...
http://www.ewtn.com/faith/teachings/marya1.htm