Mulogo's Treatise has two subtitles. The official subtitle, as written by Mulogo, appears on the book's cover and title page. The summarized subtitle, as written by Ludaceous the Scribe and provided as a commentary along with all his other notations, also appears on the cover and cover page as a notation.
Ludaceous's subtitle also appears as the official product listing and ISBN registry because, quite frankly, Mulogo was a bit too long-winded in his choice of a subtitle, so his selection would not fit in the alloted space either on Amazon or with ISBN. Mulogo strives for accuracy and assistance without limitation... digital forms, not so much.
Mulogo's Treatise is really two stories... a concise tome of wizardly advice and then the satiricial commentary on that advice by Mulogo's scribe. The dual subtitles maintain the consistent back and forth that is the relationship between Mulogo and his scribe, preparing the reader for the banter between the lines ahead.
Also, Ludaceous likes to think his is the catchier subtitle to which Mulogo would heartily disagree... if he ever gave the matter any consideration.