Having been raised in the East I resent the fact that you are claiming the title Worlds Greatest Sub sandwich. There is even one here in the midwest that is far superior, Jersey Mikes.
Your bread is too narrow and a little too firm.
The only advantage I can see is the fast prep time.This was only my first experience but I believe what I experienced is the norm, except my first visit wherein they were out of bread at 1:00pm in the after noon, not good for a sandwhich shop. I had to return today in order to judge.
Review about: Jimmy Johns Sandwich.