In general university admission policies are fair. Most require a few letters of recommendation as well as a passing test score, and a minimum grade point average. These are not unrealistic expectations. Nor is it unrealistic for a university to take the better students first. That is also fair. The unfairness begins with the more particular schools who allow so and so in because they are related to so and so. That admissions policy is simply ridiculous!
Yes, university admission policies are fair. Most universities are trying to create the best, most diverse population of students so that they educate the next generation of leaders. By not going strictly off test scores (which are biased) you give more people the opportunity to improve their lives, which is always a good thing.