Did Bill Graham run both Filmores(I thought he did). I saw blood Sweat and Tears and Tull at East. I believe that Zeppelin hit majestic and transcendental heights that even the Beatles and Stones did not hit. Now Pink Floyd, that is a different matter and for me picked up where LZ left off.
Zep and Floyd, imo, are apples and oranges. I like and respect them both. ...Same with the Beatles and Stones. ....I'd rather listen to and enjoy them rather than measure them against each other. It all comes down to what I'm in the mood to listen to at the time.
Yep, Graham ran both Fillmore establishments.