Isn't anyone bothering to question how those numbers were achieved? LoC is a very very poor metric. It does not capture usefulness of code, its complexity, or how many commits were needed to get there.
If I were to choose between two pieces of code doing the same thing, I would choose the one doing it in less lines of code. It could be an index of better maintainability, perhaps. I am just saying that you can't tell anything from these numbers. They just start flamewars.
For instance, I don't use all of the kernel; most drivers do not apply to my hardware. I use most of the glibc functionality, though.
And I will continue to call it GNU/Linux, not because it has a lot of GNU code in it, but because I think that it is important that people remember they are using a free-as-in-speech system. Or in a few years we will end up with a lot of Linux (android, google OS, whatever) systems that will have a small free portion, and will be uncannily similar to the old windows world again. No changes allowed. DRM everywhere. Patents to prevent you reverse engineer it. Etc. Calling it GNU/Linux normally has some people asking me "what is GNU?"; that is the most important part.