I completely agree with you.  The school doesn't matter; you do.  Everybody in dental school is basically equal when it comes to smarts.  This isn't undergrad, where most of us are a lot smarter than everyone else.  Dental school goes from being smart to effort.  The students that put in the most effort, get the best grades; no matter what school they go to.  There is a guy in my class that is number 1 in our class, 4.0 gpa.  He would have the same grade whether he was Harvard, Temple, or Howard.  He has that grade because he spends every waking hour studying the material.
I think the choice between Case and Temple is easy.  Temple has a better clinic, and didactically, you reap what you sow.  Philadelphia is 1000 times better than Cleveland.  Cleveland is a dump. You are 2 hours from DC or NYC.  1.5 hours from the beach. Lifestyle is much better in Philly. Clinic is much better than Case.  Didactics are what you want them to be.
I really don't see anything that Case has that is exponentially better than Temple, but Temple has many things that blow Case out of the water.