The Overall Score formula is sum(top(5, scores)). So it is summing (adding) the top 5 Score values. Your Tournament Score formula is if ( r<=8, n-r+1, 0). This gives Fred the Scores 13, 13, 14, 16, 12, and 0. Those simply don't add up to 126. They add up to 68, which the "Overall Score" column is displaying.
So, the issue is that your Overall Score formula is summing SCORES, not POINTS. Change your Tournament Score formula to:
points
This will make each player's Score value the same as their Points value. Then the Overall Score formula, which adds up Scores, will be adding up the correct values.