If you do a search on google.com you will find many websites and people who are dissatified with FRAM. Before they used to make good stuff but then resorted to cheaper labor and cheaper materials for more profits. Hence the problem.
If you go to Parts America or some auto places, they have pictures or actual filters cut in half and you can see the diffence in the thickness, etc. of the filters.
Personally I always use genuine filters on ALL our cars. The price difference is very small and I am a perfectionist/purist/old school.