Not something you see as a user, at least on the Surface.
> No "Patch Tuesday"
Because Apple leaves you running vulnerable software for months at a time. (Remember the zlib double free?)
> No finger pointing between hardware vendor and OS vendor. No third party drivers necessary to clean boot.
Not an issue with Surface.
> Fantastic, fully native support for the wealth of open-source software available for UNIX/BSD.
"Linux on Windows" may theoretically be non-native but it's a better experience than mac - real apt-get, install anything that works on Ubuntu without having to compile anything yourself. And has OSX figured out how to display any OSS GUIs yet?