For one, Chile's standards are not necessarily that high
But, the PNW quake I think was left out, because the last occurrence was before the statistics that generated the map occurred. Another, the tidal wave and ground liquifaction are the real threats in PNW. The fault type there is closer to the ones that generated the Japan and Indonesian quakes, an offshore subduction fault that can potentially have a 9.0 range quake and did in 1700.
The San Andreas does not cause quakes this big, because of the fault type.
Also, aside from tsunami risks, with construction to account for them, earthquakes do not cause the kind of complete destruction that some storms do. In some cases, tornadoes and hurricanes completely destroy relatively modern buildings to the foundations. This would only happen with an earthquake if the quake caused a tsunami or landslide.
