I am sure if you looked at race-based stats on who played sports in high school (as opposed to test scores like in the article), you would see that Asians are way behind in that particular metric.
And while some may not think sports matter, colleges do. And it appears that there is good reason for this, as sports teach leadership, teamwork, how to perform under pressure, etc.
I would hope this lawsuit is thrown out, as this country really should not be encouraging "tiger mom" behavior as the right thing to do. Instead, if you want your son to get into Harvard, stop making him study 15 hours a day and get him into extracurricular activities.