Different Shutdown process from Kodi or ssh

[Gauner]

HEy,

I realize that there seem different shutdown routines whether I choose "shutdown" from the Kodi menu or do a "sudo shutdown - now" from ssh.
One thing I described here:
http://forum.xbian.org/thread-4084.html (different things showing below the progress bar).

Another thing I'm struggling with now is:
I have a shutdown script inside /etc/rc0.d/K... (spawned from /etc/init.d/ by executing update-rc.d ...). It gets perfectly executed when I do a "sudo shutdown -h now", but not, when I select "Shutdown" from the Kodi menu.

Is there an explanation for this? What's the difference between these processes? Can I make Kodi to execute excatly the same as "sudo shutdown -h now" from the shutdown menu?