The Rams have the pieces to get this defense going because there are enough pieces in the secondary to cover well enough to make up for the pass rush they lost.
The Cards however don't have the pieces in the secondary to counter the loss of pass rush. They will be trouble based on their offense though I think. But we should be able to beat them because their defense is going to be smoke and mirrors all season.
9ers will at some point insert Jimmy and recover. Their defense is excellent so they will once again be our rivals for the division.
Seahawks have an excellent defense and even some nice pass game weapons but I don't think their offense can sustain well enough. If Petey can keep his run game rolling, however, they will win a lot of games, so it's possible they are around that .500 ball range.
So my answer to this one is No. And the reason it's a no is the 9ers.