First off, he was taking snaps from Tarullo each time. You know, the third team snapper.
Secondly, fumbling the snap will lose you your position faster than anything regardless if you are getting it from the third string center.
Thirdly, I have rewatched the tape for each QB several times and it doesn't look that much different to me.
And finally, do we really need a seperate thread for this? I mean, none of the QBs had solid line play, and both Romo and Henson looked good considering, and even better after rewatching the game tape.