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Cutting it short, earthquakes take place far away from the surface, to the point that-/+ 1 km is a small margin of error compared to depth. Well, their hypocenter does. Our basis for the magnitudes, the description for them, is the description of what it's like on the surface, not the epicenter.
For exemple, a magnitude 5 earthquake sometimes takes place 30 kilometers underground. Most earthquake feats come from physical power and shockwave, which kind of get a lot weaker after traveling tens of kilometers.
Because of this, that T-Rex making the cup vibrate is not it being High 8-C, but it being simply close.
Another problem is that most such "earthquakes" created by sheer strenght have an immensely small area of effect. Some earthquakes can take place over hundreds of kilometers, I feel like something that is only felt for a few hundred meters should not be as powerful as a normal earthquake just based on that, too.
For exemple, a magnitude 5 earthquake sometimes takes place 30 kilometers underground. Most earthquake feats come from physical power and shockwave, which kind of get a lot weaker after traveling tens of kilometers.
Because of this, that T-Rex making the cup vibrate is not it being High 8-C, but it being simply close.
Another problem is that most such "earthquakes" created by sheer strenght have an immensely small area of effect. Some earthquakes can take place over hundreds of kilometers, I feel like something that is only felt for a few hundred meters should not be as powerful as a normal earthquake just based on that, too.