Agreed but doesn't a more aggressive defense make it easier on the DBs in one respect that they don't have to cover all day? If the QB is either running for his life or has to make a throw before he has time to eat a donut and go through all his progressions ( as has happened in recent years) it stands to reason that the DBs need only cover for a shorter amount of time, lessening the chance of a completion and the third down defense should improve. This keeps the defense off the field, fresher in the 4th quarter and gives the offense more possessions.
An aggressive defense doesnt mean more successful pass rushing. The Jets played 1 gap last year and their pass rush was aweful, because they couldn't win one on one battles.
Somehow this board had evolved into the idea that an aggressive defense means we have decided we want to hit the QB and a conservative defense means we decided the DL should just sit there and do nothing.
The differences are not even close to what is being implied.
We play base 50% and sub 50%. In sub package the DL will do nothing different than they have always done.
In base, lets use the WDT as an example.
In a 2gap he is head up on an OL. If its a run, he must play both sides of the blocker. That is, his technique is to control the blocker so that he can make a tackle on plays to the gap on either side. In a one gap he is shaded to the shoulder of the OL, and his technuique is to fill the gap on that side. He is equally likely to get blocked in either case. The scheme will not make him beat his man, his ability will.
Now lets look at a pass play. Anyone who has ever played defensive football understands that you don't do the same thing regardless of what the offense does. If it is a pass, the OLs first move is to take a drop into pass protection.
The difference between the 1 gap and the 2 gap is that while that is happening the DL fires toward the center of the player or his shoulder (with the OL knowing he is offset and going there). Wow, what a tremendous difference. I can't believe BB has been so stupid to sit back and not want to try to get any pressure on the QB.
Really guys, learn what you are talking about before overstating it so dramatically