One of the things I often feel is missing from these experiments is answering the question "What did the beer taste like?" We know the beers we're indistinguishable but the article for this experiment doesn't provide tasting notes. I assume both beers were good and true to style, but, actually that is not stated. So, it's just an assumption on my part.
I realize taste is subjective. But, if both beers are indistinguishable but taste like crap then the results are less meaningful than if both beers fit there target style and taste good.