I agree wholeheartedly with that post.

Nirvana had one album that changed everything: Nevermind. Their subsequent album was nothing special at all. All of AICs music was top quality and enduring.

Nirvana gets the credit because of that one landmark album (and lets face it, the album only had 1 or 2 landmark songs on it), followed by Cobain's landmark suicide. Had Cobain never shot himself, Nirvana would likely not have all of the credit for creating Alternative music.

And thats pretty much what overrated is, getting a lot of credit that isn't deserved.