GPA/MCAT scores are not the only factors involved with getting an interview and subsequent acceptance, wait list, rejection.
For instance, of Jefferson's 223 openings, about 20 seats are occupied by students in a BS/MD program with Penn State, 20 by students who are residents of Delaware through a special program, 15 by U. Delaware undergraduates and approximately 24 through EDP. Waiting for the August MCAT is detrimental. AP courses credited by home institution acceptable, but should be supplemented by advanced courses in the same discipline, especially biology. CLEP not accepted. Courses taken in the evening or summer school at the SAME undergraduate institution acceptable, but taken elsewhere depends upon quality of the elsewhere. Premedical Committee letters of recommendation carry more weight if there is a Committee. Jefferson particularly values letters that emphasize personal rather than academic quality. The weight of letters depends on their credibility (a big advantage to committee letters because the committee's credibilty is much higher, based on past experience with a committee's evaluations, rather than those of "unknown" individual faculty).
Of those interviewed, about 30% are accepted on a rolling basis, 60% rejected, 20% placed on a wait-list. Of those who complete an application, about 10% are interviewed, 20% rejected, rest temporarily deferred while awaiting letters, grades, MCAT scores.
Major criteria: GPA, BCPM grades, MCAT scores, letters, as well as motivation and suitability for medicine based on the personal statement and outside activities. Those criteria are used by all medical schools.
Jefferson also cooperates with three postbac programs in admitting students.
There is no real mystery to all of this and you would do the same if you were on an admissions committee. It is almost useless to compare yourself with other students you know who got interviews/acceptances.