The official line from Northeastern is that acceptance rates are the same across colleges, approximately. But they don’t release stats so it’s impossible to actually know. Given that it’s relatively easy to change majors after being accepted, I think they’re trying to get people to apply where they actually want to go, not where they think it will be easiest to get in. In general, your best shot is where you’re the best fit. I wouldn’t worry about trying to dissect the admissions rates of each college.
The exception is what I think of as the “specialty” programs, like physical therapy and pharmacy, which are combined bachelor/doctorate programs.