Scholars of early Jewish and Christian mysticism have often seen personal religious experience as a kind of gold standard for visionary texts. According to this assumption, autobiographical first person narrative would be the truest or most convincing evidence that someone really experienced a heavenly journey. Pseudonymity, by contrast, is a difficult and confusing mediating layer--a mask.
We can put the problem more rigorously: In linguistic terms, the question is how author (the person who created the text's content) and principal (the person who takes responsibility for the text) are aligned: are they the same? If not, how do they relate? In biblical scholarship, for example, the question of the authorship of Jeremiah or Ezekiel is about how and when author and principal align. But people who study autobiography and memoir have long recognized that the alignment of author and principal does not make a text less literary, or true.
And now, this interesting study of 40 people who confessed under interrogation to crimes they did not actually commit: 'Seven described their involvement in the crime as coming to them in a "dream" or "vision."' If one is cast in a certain role--say, of criminal who has not confessed, and is under great pressure to do so, one may have an "authentic" experience. But is it less mediated, or truer?