All the points you make are so false, I'm just wondering if you are actually serious.
First, let's leave the marketing keyword ,up to, outside. In cold numbers reality, both Intel & AMD gained ~ 2-3% on Windows 8, on average, and that's what matters.
Second, Linux has not 8%. Head over to the Linux forums, there are threads discussing what Linux should do to go above 1% usage. You might want to go over there, and enlighten them (and the rest of the world) that they've been 800% wrong.
In the same time, I'm doubting you have used a single distro in your lifetime.
Third, CPUs are benchmarked with the most popular apps/games people use, and that's the way it should be. Therefore Windows & OS X get the priority here, noone cares what you personally want.
Fourth, I've built 4 hacintoshes, including my own, over the last 3 months, and AMD is a terrible no-go. Full of bugs, kernel hacks & works very unstable.
Quoting MacBreaker:
Mac OS X does not offer any official support for AMD processors, so the only methods available to AMD Hackintoshes remain in a state of quasi-legitimacy. For instance, the tonymacx86 forums expressly prohibit any discussion of AMD Hackintoshes, and even on forums that permit discussion, AMD is always a much less popular subject than Intel.
Keep in mind that support for AMD Hackintoshes is sparse, and in some cases nonexistent. Once you've installed Mac OS X on your AMD computer, whether with iBoot Legacy, nawcom's ModCD, or a distro, you're on your own.
Have fun sorting that mess out.