Well then there wouldn't be a reason to have a review board if those interviewed would be more or less sure to pass it.

It's very unfortunate you did not make it yet you feel like you cut the grade. But you know what, you need to let it go and just move on. In life you will always win some and lose some. Getting bent up over one that you lost and not letting go will do you more harm than good. It is what it is and tomorrow is another day. With your drive, it's only a matter of time before the next door opens up. Good luck mate and stay positive!