They developed and tuned a fairly elaborate process designed specifically for generating those images out of classification NNs. The difference between the two

They developed and tuned a fairly elaborate process designed specifically for generating those images out of classification NNs. The difference between the two demos is that the impressiveness of those images is mostly subjective, while handwriting replication has pretty well-established criteria to judge it by. Also, it sounds like priming is fast and does not require tons of samples.