Video Editing,
Picture Editing/creation (general creative things, Mac seems to prevail in this),
Play Music, Movies, etc.
Do general things such as customization of the system,
Games (Windows has more).
Just about the basic things, both have some more features or variety for some of the things.
So why fight? These are machines, built by humans to help in tasks, we use them for these tasks and thats it, thats all. Theirs no fighting we use them for common and practical uses, people buy them, people use them, thats it, no more. Why fight over a inanimate object, it doesn't talk or express emotions (like a human can) its a electronic device. You don't need to give your life for it.