No, they are not. And why is Stanley S blurry and Student S not?
Because when the PDF was created, some information (Presumably lightly typed characters) were interpreted as part of the background security paper and not as the foreground birth information. Because of this, when the PDF was compressed in order to make it consumable by the general public, it reduced the size of that background image. Because the characters were considered ‘part’ of the large background image, they were compressed to the same extent as the background, leading to a fuzziness which is traditionally associated with compression.
Any person can verify this by opening the PDF in a vector editing program (such as Illustrator) and delete the background layer. All text that appears fuzzy appears in that background layer, including the checkboxes and the final number 1 in the top right hand side of the COLB.