Posted this in another thread. Applies better here.
Our pass rush is not "bad", just not "complete". Without blitzing we almost never have pressure up the middle.
Irvin has done well, even if he did not finish with double digit sacks. My eyes go to him on almost every play he is in (old d-end).
Bruce gets free and "gets there" incredibly often. I'd love to know how many hurries/hits he has. Problem when he gets there is that half a step up in the pocket puts the qb out of reach. He will get better. ANY interior pressure would increase our sack/hurry numbers dramatically IMO.
Look at pass rushers around the league. It is really tough for any one player to keep an effective rush going all game long- it simply requires an incredible energy expenditure and no one can do it effectively every play or all game long.
Also look at careers of top pass rushers. Most are not on top for long. Its a tough job, and only an elite few can string together more than two or three high sack years before they slow down and eventually breakdown.
Basically, I see no need to worry about pass rush. Although the monster 3-tech would help tremendously. How many sacks does Aldon Smith have without Justin disrupting? Bruce and Clem need a "Justin".