Non-intelligence factors are at least as important as intelligence factors, if not more than the latter. Success is built upon tremendous amount of study, practice and devotion. In addition, having a definite goal and knowing what to do next become more important. In fact, researchers have evidence that an intrinsic passion for one's work is a key factor for success.According to my own experience, during our college years, having a good study habit is also important. Higber marks can't be gained by putting in more hours. Efficiency in study can help us learn more.
Therefore, I think success is brought about both by innate intelligence factors and by non-intelligence factors.