Why does it always have to be "but they could be better"? In comparison to what?
games that are animated better (Red Dead Redemption, Assassin's Creed I/II/Brotherhood, Uncharted 1/2, Killzone 2/3, Crysis 2, Final Fantasy XIII, some others)
They can always be further improved. I think they look fine, good, even, but there's ALWAYS something better to be aimed for. Plus, the OP asked and two of the options made sense. I voted for "they look fine", though.