I'm still not fully convinced he's a complete choker. His fourth quarter stats have always been solid. He can't do it alone.
He's playing worse than last season, but his OL might be somehow worse too. Seemed like 8 of the last 10 plays against the Giants were complete OL collapses. Fumblin' Felix didn't help in the fourth and he got stuffed all game. Bryant's dropped punt return and subsequent fumble didn't help matters. He's working with Witten, sometimes Austin, and a patchwork of players that refuse to cohere into a team.