He's missed 50% of his starts the last 2 seasons. I like Latt when he is on the field, but he costs a lot of money for someone only playing 50% of the games.
there's that and the fact that the team allowed fewer points in the games he missed than the ones he played. Still, I don't think his impact can be fully quantified based on that stat alone. I do think they are a better defense with him than without