Yes, that's all fairly simple and straight forward. So then why do other teams, with worth offensive personnel than the Packers, not struggle so much?
Their preferred offenses aren't built the same. They have more cover-2 counters just "there" in their offense by default.
It's like everyone wants to JUST look at the Packers and completely ignore the numerous other passing offenses in the NFL. I'm sorry, but I still haven't heard why two deep safeties can turn Rodgers and the Packer's passing offense into the Alex Smith Kansas City offense yet teams with FAR less on offense manage to field legit passing games:
To be fair, I'd call the Chiefs' offense better, as is it has been generally more effective in picking up yards.
how are the Chargers, missing a RB and their best receiver, managing not to be beffudled by this defense?
A) They have Gordon at RB who is leading the league in touchdowns. Credible run threat: Check.
B) They have Hunter Henry at TE. Seamstretcher: Check.
How are the Lions not befuddled by this defense?
Three solid receiver, just like the Packers. AND a seam stretching TE in Ebron.
They also do a lot of under routes and bubble screens to spring players for YAC.
How are the Redskins not befuddled? Those three teams are top-10 in passing yards per attempt...
Three running backs with 4.6 yards per carry or higher. Play most of the game in 2-deep and give up 200 yards on the ground.
do other teams just not realize that they can shut down those passing games with two-deep safeties?
You're over-simplifying. Playing the majority of snaps in 2-deep against those teams is overly risky, because they will immediately hurt you another way, typically either down the seam on on the ground.
It also doesn't tell us how, exactly, they are leading the league in YPA. What is the average distance traveled in the air? They could just be the best at yards after the catch.
And if Rodgers isn't willing to check down, then the coaches either need to get him to change or the team needs new coaches that can get through to him.
They appear to have done so. Again, re-watch the Bear game. The scheme was throw short, hurt them, and force them out of 2-deep. Then take a few shots. The game plan was
flawless. Once Rodgers settled down and was hitting guys short and in stride, he was 8 yards per attempt.
The only problem now is proving they can stay the course. Both just keeping it together, repeated it against better defenses, and having a counter-counter-punch ready to go when teams shift out of 2-deep as a result of easy completions for 7 yards.
And then, trying to anticipate your next question: What about 2015? We didn't see much, if any, cover-2 last year. Defenses didn't need it. JJ is slow. RR is slow. Adams was injured and couldn't run. Ty was on IR. Cobb was in and out of the lineup with his own injuries. Lacey was fat.
So teams played cover-1 or 3 and bought a safety into the box. And it completely broke the offense, because we had no counter. 8 men against a fat Lacey = no yards. Single high safety could help out either corner with ease, because everyone was slow. You can't reliably throw people short, because that 8th man was clogging up lanes. Slants were a no go, because corners could press with ease, as our WRs couldn't make them pay and beat them--to slow.
The only thing they could do its go to trips and run crossing routes/rubs all game long. The problem with that is they are risky and kind of difficult. Without adequate practice, you have receivers running into each other, defenses having clear shots at the ball for interceptions, and the worry that a legal route turns into OPI, due to sloppy route running. Should they have tried anyway last year? Yeah, but I at least kind of understand why they were reluctant.