Exploud
It seems like it is just useless on both offense and defense, at least literally.
Defense:
Disarming Voice has an extremely late dodge window, even a player that isn't really paying attention can dodge it most of the time. It has the coverage, but its animation is way too long to be useful.
Fire Blast sometimes won't get used before being killed. And one word: Kyogre.
Crunch is the only viable option, but it has terrible coverage against Machamp.
Bite doesn't rate.
Astonish is at least useful, being unresisted and great energy gain, but the damage output is still somehow underwhelming.
Offense:
Bite is superior to Astonish. They have similar type coverages, but Bite is more flexible.
Crunch isn't that good on offense, it is Tyranitar's stats that make it look good. Without STAB, it is just bad, but it shares the same type with Bite.
Disarming Voice has way too low DPS.
Fire Blast is the only charged move with 1 bar here. It is clearly not the best.
Answers
This can be seen as a counterpart to Flygon, which has a great movepool but awful stats.
This is a prime example of how Niantic needs to code in new moves. The moves they made were mostly suited for Gen 1 (with moves such as Drill Run and Mud Shot that aren't often seen on newer Pokemon outside of tutoring and TMs). This is why we see lots of Pokemon's move pools and think to ourselves "Well that's a stretch..."
