Which program are you talking about? MMEDIC, ENGMEDIC, or the URM Early Medial one?
The URM Early Medical One is not "easy" to get into. BU is one of the higher ranked medical school's so it would definitely be better for you to get an MCAT around ~30 +/- 2
but since it is focused towards URM's its easier than traditional processes. Surprising right?
MMEDIC and ENGMEDIC are extremely competitive, you apply in your sophomore year and they typically interview people with 3.65+ who go to BU undergrad. If you know BU at all, getting above a 3.5 there is fairly difficult