The Pittsburgh Steelers are in an ideal environment to develop their team during training camp. The preseason process is long, and just because someone struggles one day doesn't mean the end of the world is near. There is time for players to stack strong days ahead. If they fail to turn things around, it could lead to them missing the roster. Time is becoming their enemy.
Not every day is going to be terrific for each player, but you can read the writing on the wall for some.
You can tell that a group of players is standing out and winning a significant number of their reps at training camp, while others are struggling.