Technical talent is only of limited use anyway. Is Mariah Carey better than Janis Joplin or Blondie because she has a better voice? Mariah Carey could be singing Opera if she wanted. For that matter, why listen to any of them when you can just listen to Opera if you want "the best"? Are the Smashing Pumpkins or Oingo Boingo better than Led Zeppelin, simply because they are more skilled musicians? Why not just listen to recordings of the London Symphony Orchestra? Every member is a master of his/her instrument (most of them are highly skilled at many instruments). Page and Plant can't touch the classical guitarists playing for any major city's orchestra.
My list reads nothing like one of every band who's had a hit. In fact, at least four of them are relatively unknown and have never had a single song on the charts. All of them are extraordinarily talented. None of them are corporate creations. Each band was discovered from obscurity after they worked their way up, playing in clubs and the like (with the exception of Audioslave, which took the musicians from Rage and paired them with the singer from Soundgarden).
The fact is, for many people the discussion begins and ends with Frank Sinatra, for many it's Buddy Holly, Hank Williams, Run D.M.C., Radiohead, R.E.M., Zeppelin, Tupac, Beatles, Bach, Britney Spears, Chicago, Billy Joel, Nirvana, Dr. Dre, Beastie Boys, Celine Dion.... And in every group you will have myopic individuals convincing themselves that theirs is more special than everybody else's. How do you compare Hank Williams with Led Zeppelin? They can only be properly understood in their own context which, frankly, is: how do the teenagers react to it? I don't care what you tell yourself, the reason you listen to Zeppelin is that is who made a mark on you when it mattered -- when you were a teenager or in your twenties. Just like 99% of everyone else you opened your mind to new music when you were 13 and closed it when you were 30. If it wasn't made in that time period it is inferior.
I know that you say, "Well, yeah, but in my case it's because it's true." Newsflash....that's what they all say.