I wonder if the results were more due to the face that the sentence itself is longer, rather than the specific words used (a longer sentence being a larger target for the user's eyes to land on).
Pretty interesting how this has been picked up by so many, and now, at least to some is getting annoying.
I presume Dustin's audience is very "niche". They were responsible, if you will for the conversion results in his article, and after the article are annoyed by it.