I think you have to remember that this isn’t an ordinary exam - the aim is to test your ability. Remember it is the examiners job to be brutal - there comments don’t detract from the fact that the examples they have shown are still mostly high quality responses of an abnormal ability from the average teenager. (Or at least I hope so or I stand no chance) It doesn’t mean you are bad, just others are better. It doesn’t mean you won’t get it, just others are more likely to. Or at least that is my optimistic assessment.