I think its the quarter defense... This is the defense I use, It keeps QB's like Terrell pryor/Tebow in check, with only 3 down lineman. And you still have 7 defensive backs on the field. Its man defense (can go man on up to 5 WR's) with two safeties dropped back into zone coverage. Then I "Show blitz", this brings people up near the line so the D is not so spread out, which otherwise would cause lots of yardage cause wide open quarter defense is only good for last minute plays that are trying to keep someone from getting a last second TD or late game FG... Its also nice because the DE's are running contain which makes it so the QB has to step up into the middle, then the middle man is on a QB spy and is waiting for a QB to run right into him. So try that out, Quarter defense, show blitz. Then commit to pass or run every time once you get better at noticing what the offense is running.