Some years ago I came across a really interesting essay that compared Sibelius' output to the good old, and by many music publishers strongly preferred Score application. You can read it on Jeffrey Grossman's site.
At that time I was a devoted LilyPond user, so I replicated the score with LilyPond to see the difference. And now as I'm getting deeper and deeper into MuseScore I did the same with MuseScore.
So I have the same score engraved with all four applications - see the differences yourselves.