I just watched it! If he would have used the second strike on any of the rounds, I think they would have gone off. I think it would have passed both the elemental and gauntlet.
If you watch the Glock video, the Glock passed the elemental and had 2 failures in the gauntlet. They retested the Glock and it had the same thing happen both times. The CZ and Glock ended up with the same number of failures, but would have gone flawless if second strike were used.