http://www.footballoutsiders.com/stats/ol
According to Football Outsiders:
Power Success: Percentage of runs on
third or fourth down, two yards or less to go, that achieved a first down or
touchdown. Also includes runs on first-and-goal or second-and-goal from the
two-yard line or closer. This is the only statistic on this page that includes
quarterbacks
GB's O line is ranked #1 with an 85% success rate. They are ranked #10 overall as a run blocking unit.
One might speculate that all those long passes in short yardage situations has defenses back on their heels, making it easier to run. Or maybe they should just run it more often since they are good at it. In any event, being #1 is a good thing.