I am not a fan of friendlies in the first place. To play a friendly on the same day as a Cup final is just stupid...no offense. You have the think what is more important? Forget that your formation was not saved, this would not have happened in the first place had you chosen NOT to play a friendly on the same day as your FINAL. I think everyone will agree on this.
Priorities MAN!!!
In real life, Liverpool would rest Gerrard and not play him in a game so close to the Cup final. Why take the risk?