Uh...it's different. That was the most common answer. Of course, no one could explain why.
When these students approached the top 10 percent of their university and asked them to share their "excessive GPA" like the federal government expects individuals earning over $200,000 to share their "excessive wealth", the students supported the "tax the wealthy" mentality while adamantly refusing to share their GPA.
What reason did they give for the double-standard? Uh...it's different.
How is it different? Because they were being asked to give, not receive. And they are right. From that angle, it really does look different.