Talking to my family down there the quake was so violent it was impossible to flee. My mother was in the laundry of her house, a small room, yet she could not get her hands to the door handle. Heavy tables, desks, and reception desks that weight 100's of Kg's have been tossed around like toys. It sounds like those that ducked under desks survived, those that made for exits suffered the worst.
You kind of imagine running for the door in these events, it's hard to imagine not being able too like what has happened.
There are 6 major zones where buildings have fallen over or pancaked that they are now in 'recovery' mode.
The city is ruined, even though buildings still stand they are unsafe. Infrastructure is ruined (roads, water, sewage), and worse still the people are deeply psychologically scarred... they've had constant aftershocks since the big 7.1 in Sept last year. They'd just got over that then this happens. Many are leaving the city for good.
I'm now starting too see names I know appear on the list of casualties (I grew up there til my mid-teens, I spent my youth cycling all around that beautiful city). NZ is not a big country, and Christchurch is not a huge city, so it's a case of everyone knows someone lost in the quake