The top image is the WH PDF imported into Photoshop at 600 pixels per inch. The bottom image comes directly from the Irey/WND article and shows clear signs of anti-aliasing which means that the computer software was trying to "improve" the image. Any "improvement" takes one further away from whatever the original was. Note also that the pixels are smaller in the WH PDF. (Smaller pixels means higher resolution usually.) I am a bit surprised that this Irey guy based his analysis upon the AP image.
ML/NJ