Well, the IIHS report states that the dummy's head hit the steering wheel through the airbag on their same test, and given the amount of footwell intrusion I'd say survivability is low.
The smart car got top ratings in it's class, but mainly because it's the only vehicle in it's class available in the US. All the articles seem to flaunt the "top of it's class" line, but when you read them they dance around the fact that it's really not a safe car. No crumple zone to speak of, and in the side impact test the doors popped open.

I had to laugh at the star flying- It looks like it was thrown.