ULA is pretty remarkable for it's run of new rockets not blowing up. Looking at ESA, JAXA, RosCosmos, ISRO, etc too is how I'm setting the par. A history like the Ariane 5 is pretty typical where flights 1 and 14 failed.
Yeah, 2 failures is par for OldSpace. NewSpace usually does much worse, though SpaceX's Falcon 9 and Rocket Lab's Electron managed to get the traditional par.
TBF: that wasn't an unsuccessful launch attempt, but a failure to not launch. Which affirms parent in that they seem to have work out all the kinks out during development.