My brother was drinking quite heavy, did use some illegal drugs, and these things were influencing his life and job. So on the advise of a co-worker some good Baptists took him in and he cleaned up his personal and professional life.
He really did start reading the Bible. He quit attending the LDS church around age 16, so he had only done some reading before that. He had never studied the Bible or read any of our scriptures on his own.
So now my brother seemed by all observations to be thriving in the Word of God quite well.
So again, the question how can you tell who the fakers are?
Now that is soooo easy. They are the ones who don't see the wisdom of the TULIP.
We have all wondered why the construct defenders try so vigorously to argue, berate, cajol, etc. everyone else in the world to their version of "sound doctrine" when it so obviously makes no difference by terms of their construct. After all, if our 'decision' for Christ is meaningless, then our 'reasons' for making it or not making it or making it in a certain way is, a fortiori, meaningless.
But I think the untold 'story' is that their little construct has theories of 'false conversions' or 'blocked conversions' or whatever that 'look just like' the 'real thing'. So, their 'proof positive' of who is the 'faker' (as you so niftily put it) is who has confirmed the "sound doctrine" of their construct.
This allows them to (1) protest loudly that they don't require people to express belief in their construct, (2) shout 'repent' at and berate those who don't agree with their construct and (3) instanteously recognize the 'in-crowd' from the 'faker' crowd by the simple litmus test of belief in their construct. Nifty, huh?