The point is, if your going to give statistics to present that Dallas did a good job in pass defense, than you have to look at the complete picture. His last drive actually dropped his numbers down significantly, because he mis-connetced on 3 passes, dropping his percentage down. And credit the Dallas special teams for putting the Lions in horrible field position, where they had to throw far up field and couldn't go over the middle. He also overthrew a wide-open receiver for a TD that he should have had. That wasn't the pass defense, it was a poor throw by Kitna.
Kitna has 13 picks on the year, and Detroit has played 13 games I believe. Dallas rarely even pressured Kitna, and Kitna wasn't forced into making mistakes that is a common trait of his. Detroit also ran the ball a lot more this game.
Seriously, even Greg Ellis had to call a players meeting, because he recognized they were playing like garbage.