Pardon me for asking but when using a computer isn't the interface between you and the hardware the whole point?
I can make an OS that is lightning fast and will make breakfast for good measure but if it is a PITA to use no one will care how fast it is on "X" hardware.
Twenty+ years under my belt screwing around with PC hardware and Win8 is less intuitive to use than Linux for Petes sake. If I had to choose between a computer with Win8 and one with Ubuntu I'd leave MS so fast you would see skid marks.
Someone could make the fastest, best handling car in the world, but if you had to sit upside down and drive with your feet, I doubt they would sell very many of them.