I would be interested to see some analysis as far as what these students are studying, not just in this article, but in all articles that attempt to account for career placement of college students in any way. Studying electrical engineering will provide a completely different likelihood of graduate employment than will studying humanities.
In this particular article these statistics I assume, would move the needle. I hope it's not considered "racist" of me to say so, but from my experience living in China and cross-studying in the humanities and computer science, Chinese students tend to study the hard sciences (engineering, science, accounting), whereas I never even saw a Chinese student in any of my humanities classes.