A 0 doesn't mean a game is non functional, just like a 10 doesn't mean a game is perfect.
A 10 means a game is pushing boundaries, expanding a genre, and doing many things to a level so far above and beyond its competitors that they overshadows any flaws. No game I've given a 10 to so far has been flawless. And the exact OPPOSITE of all this goes for a 0. A 0 doesn't have to be E.T.
The graphics of FF13 were anything but "good". I guess they were impressive from a technical standpoint, but the enemies still looked like overly busy Bayformers. And the score was painfully ungreat. There has never been a more generic, forgettable battle theme in FF history.
My 0 for FF13 has less to do with it being as bad as E.T. and more about it completely betraying it's genre, the series' legacy, and the entire philosophy of games =/= movies.
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Genesis does what Nintendon't
http://www.youtube.com/watch?v=k7nsBoqJ6s8