I agree about the logic flaws in this article. As someone who works with one of the largest public college systems in the USA, yes, URM and Non_URM students do tend to give off the impression that asian americans fair better, and yes it is an illusion- however, focusing on ethnicity is a mistake when focusing on students who's parents also went to college- and pre-existing socio-economic status. Asia is much father away then mexico or what have you- it costs more to come here from asian countries then it does from hispanic contries on travel distance alone.
I don't like this article, I also don't like the URM/NON-URM status that school systems make based on ethnicity alone. There are many fields in which non_urm (meaning not white or asian) preform better- and they call these negative gaps. A gap is an ABS there is no -Gap. Pardon my spelling mistakes.