You got the score you got. There really is no explaining and P won’t be moved by your not being satisfied. You can’t “tell” them whether or not to see it as a blemish. It sounds cocky and under-informed.
What you have to do is rest on having done the best you could in your whole app, be satisfied you gave it your best shot. Understand that the competition is fierce, it’s difficult to predict how adcoms will view any positive or a negative, in the whole context.