This sounds to me like such a non-problem that is blown out of proportions. Somewhat typical for American way of handling politics. Back at home for example (in Romania), there is an SAT equivalent (that is also much tougher). The universities can each choose to use just that in the admission, or they can choose to give another test on their own. These admission tests are usually setup around the country such that large universities don't have it on the same day. For the top universities the admission tests can be quite difficult, a top 1% would be at the bottom 25% if they don't prepare specifically for those tests. The tests are usually given for Math, so they're pretty fair and easy to score. And if you prepare for one university it's pretty much the same for all, with slight differences.

That math is hard, but at least you know what to expect. And if you prepare properly, you kind of know where you stand. I don't understand how US admission is acceptable: very wishy-washy, essays, extra-curricular activities, references...who decides what matters most? It's by design unfair and unpredictable.