Tsunami size compared to initial earthquake

[cloa]

I believe that the science for Tsunamis is not well-developed enough to say that at a particular location a tsunami developing earthquake (which not many of they actually do or create any significant wave) will develop a certain size tsunami given a certain initial calculation of energy of subsurface earthquake. Maybe much later after the earthquake has fully analysed they might give an answer they expected the actual result but its always really too late. Just an issue for the many threads of the damage to the Fukushima Nuclear disaster.