Maharajji did not seem to be "deciding" how to react to any devotee and in fact advised others to...
SEE GOD IN EVERYONE. IT IS DECEPTION TO TEACH BY INDIVIDUAL DIFFERENCES AND KARMA.
Nevertheless, when pressed, he could "explain" his behaviour:
Once I was chastising Maharajji for giving photos to people who were worldly and didn't care about him.
He said, "You don't understand me. If I tell a man great bhakta (devotee), I am planting a seed. If a person already has the seed planted and growing, why should I plant another?"
I said, "You are telling these drunkards, liars, and dacoits that they are real bhaktas.
They will just go home and carry on their old behaviours."