No MAC OSX is just copycat of LINUX Unix.
Apples has not come up with anything except steal it, marking it and selling it for overprice.
The real core is----> Linux-UNIX. I can guarantee you many of all the programmers on Apple use Linux in their free time. All features like “windows that fly” GUI-look, other features etc. comes from example LINUX KDE.
Everything has always come from LINUX. By the way LINUX are years ahead of Mac OSX Mavericks too.
If you like Mac use it! Please, I don’t want to hijack this thread! This forum is about Cubase and music not OS.
Have a great day, over and out! 
Best Regards
Freddie 