I just saw The Avengers think of a question about Thor's Hammer.

Well, when Thor picked up Thor's hammer, there was some kind of energy transfer between him and Thor's hammer, as if Thor's hammer could recognize the Lord, and then he picked it up. When there is no energy transfer between the two, the hammer of Thor is in a self-enclosed state and cannot be used;

In other words, if you put Raytheon's hammer on an object, no one can use it. Others can move Raytheon's hammer by moving other objects, but they can't play its role. At this time, Raytheon's hammer is an ordinary hammer, even if its owner directly gets the hammer, it can't be moved (even if the force exceeds the limit, it can't be used).

If the protagonist wants to use the Thor hammer, there is no such restriction, because there is some spiritual connection between the Thor hammer and him.