Major Competitiveness (CompSci, Engineering, Neuroscience)

Hi, I am just wondering how certain majors stack up in terms of competitiveness in college admission. By competitiveness I mean the quality of applicants for that specific major, and the number of people trying to get into a certain major. I am well aware computer science and engineering are fiercely competitive majors. Can anyone else tell me if there are majors at the same level of competitiveness compared to those? Also, how does a mathematics major compare to those in terms of competitiveness. How about a neuroscience major? Lastly, within engineering, which major is typically the most competitive? If anyone could give a list of their engineering competitiveness that would be great. But specifically, could you talk about how math and neuroscience shape up compared to engineering and compsci in terms of competitiveness.

Thanks a lot

Whether some majors are more competitive, and how much more competitive, depends on each college.

Before trying to game admissions with intended major selection, please read:
http://talk.collegeconfidential.com/college-admissions/1947599-faq-does-intended-major-make-it-easier-or-more-difficult-to-get-into-a-college.html