You have to realize that Brown is a rookie in terms of the med school admission process. As I'm sure they told you in your interview, up until this year, all of the class came from the PLME program (8-year undergrad and MD), the Dartmouth-Brown program, and a handful of students came from these other alliances with other undergrad institutions. Anyway, they are trying to pilot what it would be like to open admissions to everyone. This is their first year, which explains why they are so freaking late interviewing and getting decisions out. They have no idea how to handle more than just a few hundred applicants! But, watch out, in a few years Brown will get it together and I predict it will really make a name for itself among medical schools.