(Image credit: Future) When you've been following PC gaming hardware for as long as I have, there are certain norms that have been around for so long, that it's difficult to shake them off. For example, in the CPU market, traditional wisdom when I was younger was that AMD was often the plucky underdog, snipping at Intel's heels.Over the past few years though, the metric seems to have seriously shifted. A look at Amazon's best-selling CPU list right now reveals a top ten domination of AMD process...