Are they more successful? When we ran scripted plays in high school, we ran them until we 17ed up or the defense stopped us or we finished them. So if we came in and stayed ahead of the chains, we ran plays quickly in succession no huddle and it looked like scripted plays worked great. MOre typically, some dubmass would forget what play we were supposed to be running by the second play or we would just get stuffed, and we would have to call off the scripted plays and make a play call that fit the situation. All that to say, maybe scripted plays work because when they don't, you don't know they were supposed to be running scripted plays.
They are probably ran and practiced. They players know what it is ahead of time and know what they are supposed to do.
It has nothing to do with repetition or what the players practice. It’s simply because the defense (usually) is feeling things out. You don’t typically bring the house from all different directions on the first drive of game.
I think this is the best answer I’ve seen.I saw a Bill Walsh interview on this years ago. He said it was:
1. The offense was more comfortable knowing what was coming & those plays were better practiced.
2. It took emotion out of the play calling. He tended to stick to his plan for testing a defensive tendency he saw on film or running a play to set up something later in the game better if scripted.
3. It allowed him to be more creative and break tendencies early that the D would not prepare for.