Jack C and Jack B have really different styles. Both were great, great players. I always thought Cassady's playing is more influenced by LSD and Bruce's by speed. I'm serious.
As a frequent contributor to these forums (all of the Vault's threads) I have a confession to make -- I never saw the Airplane. I had so many opportunities to see them too, at the Avalon, Fillmore West, Winterland, Golden Gate Park and others. I saw Janis, Quicksilver, Steve Miller, Hendrix, The Who, the Dead, the Doors, but somehow missed the Airplane. A friend in college convinced me that I should see them (after we listened to Bless it's Pointed Little Head on good blond Lebonese hashish), but suddenly, they were gone. I consider this to be one of the biggest errors of my life. That, and not seeing Led Zep at the Fillmore or Winterland. Dang it.