The point of Faramir's story in the books is integrity in the face of great temptation. "But fear no more! I would not take this thing, if it lay by the highway. Not were Minas Tirith falling in ruin and I alone could save her, so, using the weapon of the Dark Lord for her good and my glory. No, I do not wish for such triumphs, Frodo son of Drogo." It's not supposed to be tragic in the book. What the GP comment was saying is "Poor Faramir, the movie took part of his integrity when they had him take Frodo and Sam to Osgiliath"