I suspect this is just smack talk. Facebook does everything that twitter does and about a million other things too. You can tweet on Facebook, aggregate tweets, re-tweet (they call it share). Just that the eco-system around Twitter, like Twitpic and such, is integrated.

I'm the opposite of what you claim to be. I use Facebook but I can't understand Twitter. I've tried using it and have several accounts but beyond being a newsfeed like Facebook's walls I can't see the attraction (except of course that it happens that your social network use Twitter as opposed to some other medium).

Win me over?