This could probably be added to the end of the turnovers discussion, but it hits on different points. When you watch great basketball teams and players, they all have an ability to impact a game which you can't grasp with numbers.
All basketball fans have heard the phrase "a quiet (number) points." Great players do the opposite. Great players make their baskets heard. When their team is down and on the brink of being put away, a great player steps in and changes the momentum. Intuitively he knows the game is about to shift, and he stops it. This was Jordan's greatest skill; Kobe is the same way.
In the opposite direction, a great player or team can understand when and how to end a game. Arizona as a team and the individual players have not shown an ability to feel the momentum.
Halfway through the second half against UCLA, Arizona was up 11 points. They defended well, stopped the Bruins and started up the court the other way. This was one of the "put the game away" moments.
But Nick Johnson ran into three Bruins' players, and the ball was lost. On the very next possession, good defense was played and the Wildcats got another stop. They forced again and the ball was lost.
The NCAA tournament is full of teams that have battled all year. If the Wildcats get up, they need to have the poise to understand the momentum shifts and take advantage of them. Otherwise, it will be UCLA all over again.