Getting back to the whole grunge scene breaking, I'd like to see how anyone can throw out generalities like "Pearl Jam is the same as Nirvana, one was just discovered first". Sorry, but the sound, while all labeled "grunge" doesn't sound all that similar to me.
For some reason, I kind of liken Nirvana to the Beatles and Pearl Jam to the Stones. Maybe having to do with the sheer popularity to the longevity, I don't know.