Although we strive for total consistency in reviews there is inherently some subjectivity. Your series was in fact reviewed by 2 different reviewers. In this case all but one of your cards were reviewed by the same reviewer. It is our goal to review a group of similar cards together, at the same time, for exactly this reason.
At closer look your card image appears to be a photo of fabric, a pillow as you have noted in the Artist Notes. It is evident that there are some wrinkles in the fabric. The first reviewer was ok with this, the second reviewer was not and left the following message for you:
Please Note: This image will not translate well in print as a greeting card. The composition and photograph will not produce a quality greeting card. The wrinkles on the pillow are distracting.
See card image here:
http://www.greetingcarduniverse.com/shopping/zoom.asp?pid=447485&w=1 Since all but one have been approved we will approve the one that was declined and let you as the artist decide if you improve your images to be wrinkle free or not. Perhaps ask yourself, is this the quality of card shoppers will buy? They certainly vote with their dollars.
The image quality indicator when you upload the image "Best for Printing" has nothing to do with subject matter. It is only an indicator of the file size & resolution and would not identify things like blurry, crooked, etc.
BTW, you can find the reviewer id codes in the card review emails at the bottom in the salutation as a 3 digit code.
For example:
Connecting Artists & Card Buyers,
GreetingCardUniverse.com
GCU Card Review Team
443
Hope that helps! Let me know if you have any other questions.
Thank you for your insightful and sensible explanation.