Considering the latest Chilean Earthquake was an 8.8, or to give a bit of perspective, 500 times more powerful than the Earth quake that hit Haiti a month ago, I doubt even HK construction/infrastructure could cope with that, especially if the epicentre was land based, and shallow.
I wouldn't like to be in Central if an 8.8 ever does strike, most of the roads would fail, as they are hollow underneath. Looking at what the quake did to solid roads in Chile, you can pretty much not count on land based emergency vehicles to rescue you here, if the roads collapse, you're pretty much fekked.
The potential for human loss here, would make the boxing day Tsunami death toll, pale into insignificance, due to the concentration of population in built up area's.
Fingers crossed, that HK never experiences a quake, like those on the other side of the world.