Has an NBA game ever ended 93-78?
Yes. NBA has seen a final score of 93-78 24 times. It first happened on January 31, 1949, when Baltimore Bullets beat Ft. Wayne Zollner Pistons, and most recently on January 24, 2014, when Cleveland Cavaliers beat Milwaukee Bucks.
That makes 93-78 the 882nd most common final score out of 3,189 that have ever occurred in NBA. One point away, 94-78 has happened 20 times and 93-79 has happened 29 times. At one point the score disappeared for 35 years, between 1955 and 1990.