So in order to provide feedback, the staff then have to read all the pieces of work and try to produce post-hoc justifications for why piece A was ranked lower than piece B. That is, they are putting in the same amount of effort as they would have done previously to marking the work, but they have no way of knowing that their post-hoc justification for the relative grade will result in feedback to the student which will improve performance. They might end up telling student A that they might have got a low score because they didn’t draw their argument together to give a definite conclusion, but we have no idea if the CJ hive mind does indeed value definite over hedged conclusions.
Perhaps you have been assigned a comparative essay in class, or need to write a comprehensive comparative report for work. In order to write a stellar comparative essay, you have to start off by picking two subjects that have enough similarities and differences to be compared in a meaningful way, such as two sports teams or two systems of government. Once you have that, then you have to find at least two or three points of comparison and use research, facts, and well-organized paragraphs to impress and captivate your readers. Writing the comparative essay is an important skill that you will use many times throughout your scholastic career.