The one thing that makes OSX different even from Windows is the way it "feels" when you are using it. And the simple things you can achieve in a very simple and intuitive matter.
I just stumbled upon an example some days ago, when I needed to add a screenshot image to a PDF. It was surprisingly easy in the Mac: Double click the PDF to open it in preview, double click the image to open it in preview and then drag the file icon of the image into the pages view of the PDF. And the image is inserted as a page in the PDF without any issues.
To do that on Windows or Linux (I use Mint in my PC) I think I'll have to print the Image as a PDF and then use some other software to "stitch" the two files together.
And like that there are a lot of other UX small things that make for a more pleasant experience in the Mac, particularly for end users.