"verbally abused" is an understatement.

He pulled him to the floor by his neck and threatened to kill him.

Also, Alastor has complete agency over Husk. He can literally teleport the latter to his location whenever he feels like it, while Val's power over Angel is more like an abusive relationship.

Alastor and Valentino are both abusers that wear their victims down until they get what they want.

While Val is an emotional manipulator who uses violence to keep Angel submissive, Alastor is a master manipultor who exploits pretty much anyone when they're at their lowest, to his own advantage.