WPI’s academic calendar is organized with 7-week terms instead of the more usual 15-week semesters like at Brown. This is part of what they call the “WPI Plan” with “project based learning”. You may want to see if the WPI curricular organization is something you like or dislike, since that can be more important than the rankings most people focus on.
Brown is known for its open curriculum with no general education requirements, but that does not apply to ABET-accredited engineering majors, since ABET accreditation requires some humanities and social studies course work. However, Brown requires fewer such courses than many other schools do.