I think what I'm saying in the two comments is consistent, though.
The average HN reader passes judgement on Facebookers (myself included), meanwhile we waste time on sites we're convinced are "better"... but often it's just a tradeoff. HN: external links to thoughtful and informative articles, apolitical, but very impersonal and humorless. FB: insular, but (in theory) you know people, and maintain your relationships with people you don't see in person.
I don't mean to say "both are the same" -- that would be too facile. But, I don't think one or the other is clearly superior in any absolute sense.