there is no certain gpa or mcat that will gain you an interview here.
i had the lowest gpa among the interview group on my day.
3.2 sci
3.4 cum
31 mcat
even the interviewer asked me about why my first year grades were borderline AP, but he didnt seem too concerned with it cause i did bring it up.
but he was impressed with my dedication i showed in my ECs and my story. and in the end, i do believe it was my experiences that got me the invite and not my grades.
so dont worry too much about comparing stats and being "up to par" it prolly wont do much.