Well, if you actually read the comics, you would know that the problem was that he caught gwen TOO quickly and the sudden deceleration caused her neck to snap.
Thor is right though. Mjolnir shifts how fixed it is to a specific point in the universe depending on the context. When it was on the airship, the airship went up just fine. When it was on the ground, it was fine until hulk tried to lift it. Then it started to dent the floor but it didn’t bring the airship down. Last, when it was put on lokis chest, it didn’t crush him, only keep him in place. It will go up on an elevator and if someone other than thor or vision or capt tries to hold it, it will move at the same speed as the elevator or only then it would stop the elevator depending on who is trying to wield it.
I am Silver Tongue, I am an artist. I have many characters and you can check out my art in the art tag. I occasionally practice witchcraft though I don't do anything too complicated. I am girl 2 and don't know what else to put here.