Unless your QB is built like Big Ben, and is actually bigger and stronger than most linebackers/defensive ends, you should always prefer him turtling up and taking a sack, instead of trying to shake off an oncoming pass rusher to make a play. Tom Brady, more than pretty much everyone else, is aware of the context of any given play. If he doesn't see anybody open, and things start to clog up around him, he'll gladly take the sack and move on to the next play. Nobody will ever lose a game because of a sack. People are talking as if he's got people running open down the field, but is so afraid of the pass rush he'll just cover up immediately, instead of hanging in there to deliver the ball. We've seen him stand in the pocket until the last second and just get the ball out before getting drilled countless times, if he is feeling good about a play, he'll make it. On the other hand, why force the issue if there's nobody to throw the football too and you're about to be taken down? A bad play was called, but he should give the team a chance to move on to the next one, instead of risking a turnover. Obviously, if we're down 10 with 3 minutes to go, he'll force a pass, because there's not much to lose in that situation.