"Y is X done right" is a common idiom. It doesn't imply that Y is a variant of X.
E.g in the case he means OS X is a unix-clone (actually a fully certified UNIX) that has made the right choices, Desktop wise, unlike Linux.
That's not true: the Open Source Initiative has no hand in the development of the kernel.
The strongest link between the OSI and the kernel is the fact that Linus is more approving of the OSI's position on ethics and co-existence with commercial software than he is of the FSF's position.
"Linux is the open-source community's flagship product."