1080? I counted SMN's burst as 2024 potency with Raging Strikes
Fester 360
Painflare 180
Energy Drain 180
Deathflare 390
Spur+Rouse+Enkindle 470
Aetheric Burst 204
Wither 240
=2024
Plus Tri-Disaster 132 total potency dots ticking every 3 seconds and Garuda's autoattacks

which is still lower than bard's 2,625 which also takes much less time to execute.