The thing you guys are missing about Tiger's putting stats is how many tap ins he had. A few years ago Tiger would never have had tap ins after most of those misses, he'd have a 3 foot comeback because he hit the ball firmer. He was very tentative with his putter the last couple days, like he was afraid of the ball getting away from him, and even left some putts short which he never used to do.
I think part of the reason he "over read" so many putts is because he's not at all used to putting so tentatively and doesn't know how much more break to allow for the ball when you are pacing it to die into the hole. If he'd putted aggressively as he used to, many of the short/medium distance putts could have been putted without giving away the hole and he'd probably have made more of them.
I think the fact there have been a few chinks in his armor where he's actually missed a few short putts this year seems to have made him a bit afraid of the longer ones. Perhaps he's slowly becoming human like the rest of us, in other words