If you go by severity then all Airbus should have been grounded immediately after the Germanwings tragedy but weren't.
There's a couple of important distinctions between the Germanwings and Hunter tragedies, and between the grounding of all Hunters and grounding of all Airbus A320-211's. They seem obvious to me, aren't they obvious to you?
If you're getting at the idea that political realities are the reason Hunters are still grounded, you may be right. That's life.