Not sure is this was already posted / discussed --
Interesting Article showing the 6 deep passes on the 9ers Defense.
http://www.scout.com/nfl/49ers/story/1590180-breaking-down-the-49ers-breakdowns
After watching these in quick sequence, I wasn't as discouraged. Yes, it was a bad result on all of them.
Plays 1 & 3
BUT, on the first two, the defense was actually anticipating almost exactly what they got from the Steelers. So the defense called was almost baiting the throws. With just a little better execution they could have been INT instead of killer long completions. (I know, that's often said in football)
Play 2 - the coverage was right there - just a great throw and catch - hard to ask much more from a CB in one on one
Play 4 - Bad defense - CB funneled Bey right to safety Bethea - but he had no chance to run with that speed
Play 5 - Again, the defense accomplished it's scheme IF the pressure got to Ben - and there was actually pressure on this scheme but the OLB got pushed down from behind as he broke free toward Ben. Once Ben escaped with time, THEN the defense broke with an ILB on a WR. But within the expected play time, it wasn't bad scheme. I guess you could argue that a S should have been in Whilhoites spot.
Play 6 - again, not a bad D call, but when Brooks went offsides Brock seemed to hesitate and put ZERO jam on Brown who went right into a 9 route on a free play. That's on Brock for allowing the free release.
So the schemes didn't look as terrible as first impression.