Just as no classical music composer is going to have the reputation that Beethoven and Bach, etc. had. It's about being the original. Sure there may be a lot of guitar players that are technically better than Jimi Hendrix was. But Jimi created out of nothing, that's why he will be revered years from now.
I was never big a Hendrix fan...Now Joe Walsh? Thats a master guitar player.
Exactly and history provides thousands of varying examples. Like you can't have a Woodstock II, or another Beatles, or another RUSH Limbaugh.