It is not all that different because Kalafina was not the only artist that Sony/Aniplex had on their roster and tried to promote. Or maybe how many of those artists were fighting for a chance in the spotlight. You don't know how many songs YK or SC actually sent out for consideration and how many of them got rejected.
Out of curiosity, which Sony/Aniplex project in the mid 2010s would you have liked Kalafina to be a part of (and instead of which projects that they did around that same time)?
Edit: I guess you can pick from Geneon/NBCUniversal Entertainment Japan projects, too, since we know they had a working relationship (Arslan anime).
(
https://en.wikipedia.org/wiki/Aniplex search with "201" or something, I can't find a chronological list.)
I guess "Hoshi no Utai" was used in a KOEI TECMO game. I guess one can wonder why that was their only song used in a game. Would having more songs in games be better for you than what they did do?
:D