It is also a fact that both meterorites and rain fall from the sky sometimes, but that doesn't mean the "chance" of a meterorite hitting my head are the same as

It is also a fact that both meterorites and rain fall from the sky sometimes, but that doesn't mean the "chance" of a meterorite hitting my head are the same as a raindrop. You're only going to get actual, reliable and useful numbers about failure rates between competing products by doing actual studies and analyzing the aggregate results. Anything else is meaningless. And as a buyer, I'm more worried about things like warranty and technical support quality, frankly, if I'm going to buy a prepackaged system anyway, which are easier to gauge from afar.