Explain the differences in risk to life and property we could expect with a repeat of the Tohoku Quake in Japan occurring off coastal Northern California (instead of Japan) and a repeat of the 1811-18

Explain the differences in risk to life and property we could expect with a repeat of the Tohoku Quake in Japan occurring off coastal Northern California (instead of Japan) and a repeat of the 1811-1812 New Madrid earthquakes occurring in the same part of the U.S. (New Madrid MO) today.