The difference will be Duke's inside and outside game. Butler will give Duke's guards trouble, but Duke can bring too much to the inside.Duke's second half rebounding was the narrow difference.
Still it was a lot closer than Duke or their fans might have expected. Had Butler's shooting been just a bit better... too many shots missed from less than 5'... the outcome would have been different. And the game was in doubt right until the last second when an attempt from the half court line by Gordon Hayward just missed... bouncing off the rim as the buzzer sounded. Regardless, Butler showed they can run with the big dogs... and they won't be so lightly regarded in the future.
Both teams should be congratulated on one of the best championship games played in a long time.