Has a FIBA World Cup game ever ended 78-62?
Exactly once. On February 25, 2018, Estonia beat Israel 78-62, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 78-62 in league history.
That makes 78-62 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 79-62 has happened 2 times and 78-63 has happened 1 times.