Also of note: if you read “But it is better to decide to displease the opinions of the Pharisees and to be subject to the commands of bishops” as merely saying that the bishops said it was the canon, but it was not, then you’ve established that St. Jerome is denying sola scriptura by this statement.
http://beggarsallreformation.blogspot.com/2006/06/guest-blogdid-jerome-change-his-mind.html
http://beggarsallreformation.blogspot.com/2008/02/semi-authoritative-catholic-canon.html