<p>MSE might be somewhere between 2 and 3. To clarify, MSE is one of the most difficult engineering majors out there. However, it is such a specialized field, most of the time you need to get an advance degree to get a highly specialized job. In that sense, it is very similar to BME/BE. Since MSE curriculum varies from school to school, it is very important to pick a school with strong optical or electrical material focus, if you wish to get a job right after college. It would be really hard to find a job with an MSE degree if your concentration is in ceramics. </p>
<p>Just to add one thing, I think you are wrong about Industrial Engineering and. Most of the IE&OR students are going into business after graduation. There are lots of job in the business field for IE&OR students.</p>