I have wondered the same thing, for example, how can 2 cards that are obviously off center, have the same grade and one not have the off center qualifier.
For example, following are a few cards, all sent in for grading at the same time, with the option checked to include a qualifer. In my opinion, the grades are sort of all over the place. Some are obviously off center with no qualifier. Maybe the lower the grade they don't use the qualifier?
Ernie Banks Graded Collection by
steveshissler, on Flickr
Ernie Banks Graded Collection by
steveshissler, on Flickr
Ernie Banks Graded Collection by
steveshissler, on Flickr
Ernie Banks Graded Collection by
steveshissler, on Flickr
Ernie Banks Graded Collection by
steveshissler, on Flickr