Even though both are relatively awful, DPS Brann was so viciously overnerfed into uselessness that his one use remaining is a random interrupt.
At least the healer Brann provides passable sustain to classes that lack it like rogue and mage.
Try doing new T8 Waxface on a rogue/mage with DPS vs. Healer Brann. It’s night and day because of how much they nerfed DPS Brann.