SWTOR plays the nerf-and-buff game with Assassins, Shadows, Sages, and Sorcs in 5.5
On the other hand, Telekinetics Sages and Lightning Sorcerers? You weren’t doing enough damage. So you… also lost potency? On one attack, though; you also got a bigger damage boost for targets suffering a status ailment and you got a fixed bug to improve your overall damage. So you’re still doing better, although losing some damage when you were underperforming feels weird even if it makes perfect sense. But that’s the circle of balance, isn’t it?
Expect the changes coming in GU 5.5.