Professional Music Engraver here. It has a long way to go to be comparable. It requires so much work to get the scores into a usable state that almost no one in

Professional Music Engraver here. It has a long way to go to be comparable. It requires so much work to get the scores into a usable state that almost no one in the professional sphere uses it. Sure, it would be lovely to have an open source notation engine (and we have a much better one in Lilypond, it's just not user-friendly at all), but to develop that would take a huge amount of effort and have tons of expertise behind it, which the project currently does not have. So much of the quality of this kind of work is tied to the user and their skills in what constitutes "good" engraving. For most novices, this is a non-concern, which is why Musescore has taken off, since it provides a great entry-level tool for most musicians to make scores. But it doesn't hold up when doing more professional and/or complex work.