You gotts to remember, you Philly folks are blessed. Saying that those aren't good sammiches is like saying Chopin is disappointing because he wasn't Beethoven and anyhow never wrote a Polish opera. In most of the rest of the USA, those are 5 star chow experiences. Add to that the "landmark" aspect, and you have a Philly Chow Destination.
And, even a cheesesteak hunter should go to South Street first, and THEN find the better places. If you do it the other way around, where's the crescendo, the climax? At the beginning, followed by letdown after letdown.
LOL, just having fun, but think about it, y'know?