The student who spends time preparing for a test, reviewing the material, studying previous tests, drilling with practice tests, actually has more scholastic aptitude than the students who do not do this because these are actual research and preparation skills that are valuable to success in mastering college material.
The only skill you gain while cramming for the SAT is how to cram for tests like the SAT. The gameability of the SAT is not an indication of general scholastic aptitude
If general scholastic aptitude measured something other than how to study for tests and write essays, then you might be onto something, except that college is simply more of the same.
