GPA, itself, isn't really important...class rank and grades in particular courses are. The rigor of your schedule is taken into consideration. SAT/ACT scores are important. I wouldn't look at this from which is "weighted" more...rather take the stance that you need to do well on all of it. You can't control the weights or how the Admissions Board will vote...you have the power to excel (or at least try to) in these areas.