He's currently running Boomburst, Draco Meteor, Hurricane and U-turn, with the Ability Infiltrator. I'm doing some experimenting with my team at the Battle Maison.
Draco Meteor is much better. Draco Meteor can have destructive power with choice specs. Here are some calcs on why Draco Meteor is really good.
252 SpA Noivern Dragon Pulse vs. 0 HP / 4 SpD Absol: 171-202 (63 - 74.5%) -- guaranteed 2HKO
252 SpA Noivern Draco Meteor vs. 0 HP / 4 SpD Absol: 261-307 (96.3 - 113.2%) -- 75% chance to OHKO
Look at the damage disparity. Clearly, Draco Meteor is the better choice any day.