The $4,300 Stacatto XC 2011 for instance, dropped from chest height, fired a round immediately without the hammer dropping. So did several others, and that was just one round of testing.
Most didn’t, but for the most part they were only dropped once or twice and it was a fairly informal test. Literally just someone dropping the pistols from the height of being told “drop your weapon.”
The P320, however, despite being dropped about a dozen times (and from much higher heights and different angles since the test was inspired by the discussions about that model going off) never discharged from being dropped.