I don't think it would have changed the outcome.
From the pictures I saw, the speed must have been very high.
Now to answer your question, in a car accident, yes fire does play a big role since it doesn't take much to light up gas. On top of that gas gets everywhere inside the car. For this reason, I would prefer to crash in an electric car if I had to.
As for the Tesla S, it is one amazing car, maybe the best car ever built like some said. The price makes it a niche product that most of us cannot afford.
I'm not worried about the "fire cases" since they were all caused by collisions. My dad used to work for a tow company and car fires happens all the time and we rarely hear about it. Media focused on the Tesla fires just because it is electric and maybe because it is Tesla.