I don't have access to original Bernstein materials; does anybody know how they define "brand appeal"? Apparently Apple has over 66% of whatever that is (such that their fraction is "more than double" the remainder), and yet only half of the respondents "preferred Apple over all other brands".

As AllThingsD certainly doesn't pass along a definition of "brand appeal", in the context of the article that 66% claim is neither fact nor spin. It is nothing at all.