[CraigJ]

There would really be no way to do it in the real world, only because of lack of data. But theoretically it could be done and you could probably do it in a few different areas. For example if you could take every hand a person has played and see what percentage they have "sucked" out when they were the behind. That would be one way to quantify the good luck. Or take the reverse and take every hand they had played and see what percentage they got "sucked" out on when they were ahead. That would be a way to quantify the bad luck. Obviously we can't do that with all the poker pros, but that is only because we don't have the necessary data. Not because it is impossible.