Nobody really can qualify being a saint based on personal holiness of life even though it may appear so from outward appearances.
Nobody knows the heart and the thoughts in a person’s heart and mind.
Canonization is only based on outward appearances.
B: People are considered "good" or "bad" (not even getting into the whole canonization thing) based on their words and deeds, not "appearances". This is the only possible way we, as humans, can and should judge "good" from "bad". Actions speak louder than words, as they say. Are you saying that there is no one, living or dead, that you believe to be a good person, because you can't read their thoughts??!?!? Ridiculous.