I'm sure that on micro level they are able to tweak the rules a bit - an applicant whom some person at CIC 'likes' less has a real chance of being turned off on a technicality (like missing a word/name/etc) than some other applicants who's 'liked' more. Now that 'liking' can be based on prejudice, skin color, religion, English level, work experience, age, bad hand writing, bad cup of coffee the CIC worker just have had or simply CIC may have some never-written and untold rules that they have in mind when doing such exceptions and 'micromanagement'.