Except that in America and Europe, Intel has a vastly larger and more impressive history and thus reputation than AMD. Granted they have had some blunders along the way but have been impressive in execution in general. And more importantly have a reputation for stability.
All of that combines for increased sales and marketshare, especially within IT departments where AMD has only recently (with A64 and Opterons) been able to make inroads.
None of that exists in mainland China. It's an open playing field. AMD has almost exactly the same reputation, history, and chance of success as Intel at this point in China.
Something that cannot be said of North America (I guess I should use NA since Canada exists also.
) and Europe where AMD is constantly facing an uphill battle.
So past sales figures, past performance claims, past bad drivers, CPUs, etc...all don't hurt AMD.
And performance figures aren't something the mainstream computer user is really interested in anyways. After all how much faster is your web browsing going to be with a Sempron vs a Quad core CPU? Even media plays fine on the low end PCs you can get now days.
Enthusiasts tend to walk around with tunnel vision, thinking everyone wants or even needs the fastest of the fast and that price isn't the motivator for the great majority of computer users.
Regards,
SB