I wouldn't worry about it unless there was a huge discrepancy (ie. 3.9 science, 3.2 cumulative). There are people who major in science and struggle a bit more in humanities/social science (sGPA > cGPA) and people who major in non-science and so have less science classes contributing to their GPA, so a lower grade is weighed more (sGPA < cGPA). Your GPA's are fine! Just make sure to compare each GPA to its counterpart when looking at the MSAR, school website, etc. Good luck.