We've seen this in the past, not every week mind you, but in big games during the regular season the Steelers are clearly not prepared for the opposition. I know it's only 1 game and it's the opener, but there's no reason to put on a display like that.
Blame the players for not performing, but the coaches take the responsibility too in a BIG WAY. They had no answer for the spread offense the Ravens were using. They proved they still couldn't tackle Ray Rice, or stop the run in general. They came into this game with the same old same mentality against the Ravens. Which is all well and good because it's still physical, but they had no answers for Baltimore's adjustments.
The home team clearly did their homework on how to beat the Steelers, and Steelers clearly didn't do theirs on how they get beat. It's up to Tomlin and his coaches to cover all the bases and not just have tunnel vision with an opponent. Playing your game is all well and good, but at the same time you have to deal with the problems that have plagued you even as early as last year.
This team looked overconfident, cocky, and unprepared for what awaited them. It starts with the coaches and right down the players. They came into this game thinking they were going to win because of their recent history. Which is all well and good because you have to have the mentality of winning, but it was obvious they couldn't back up what they talked.