https://musicbrainz.org/doc/Style/Recording#Title

If the recording has tracks from official releases, choose the most common title from official tracks as the basis for the recording title.

This is not always true because of https://musicbrainz.org/doc/Style/Principle/Error_correction_and_artist_intent#Error_Correction

I think it should be explicitly noted that error correction overrides the popularity of the title.  Edits have been voted down because the corrected title isn't the most popular title.