blender was used to make this simulation, that turned out to be very accurate apparently.
There is a huge difference between accuracy and changing the settings until you get the similar effect.
Welcome to the world of science. Now you need a couple of more earthquakes and the same settings to other buildings. If it is correct every time then the simulation is in fact a correct simulation.
Check out the blog, they are inputing initial conditions.
As mentioned, this is already covered in another thread. Closing.