Shaken

Another earthquake struck today ... this time it struck near Mexicali, Mexico and it registered a 7.2 on the Richter scale.

Experts tell us this one was about five times stronger than the one that struck Haiti in January, yet there were only a handful of buildings that collapsed - one was a parking garage in Mexicali - while several buildings (on both sides of the border) were damaged and will need to be repaired before they can be used again.
Loss of life reported so far - two dead (and less than 50 injured).

Why such a disparate difference in damage and casualties between these two earthquakes?

Could it only be the substantially stricter building codes (and the enforcement of those building codes)?
If so, the Haiti earthquake seems all the more tragic.
So much 'preventable' human suffering and subsequent misery...