I think that your major has no bearing on predicting success. Ppl in the top 10 or 15% all have wildly different majors and/or occupations. For instance, one of them was an art/art history major. Others have your more conventional degrees, e.g., engineering, accounting, bus. admin., polisci, english, history, econ., etc. Although they are in the top 15%, there are various others w/ the same degree, sometimes from the same school, and are in the bottom half.