Exactly what kind of answer are you looking for?
A car is only as safe as both the person behind the wheel and the other people on the road. Crash test info while interesting is still fairly useless. I could have a 5 star frontal impact crash rating, but when the 18 wheeler runs over me it doesn't make much of a difference.
You've been on the site for a while, you have read about all the crashes, and it seems that almost 50/50 as to whether the driver lives or dies. This is mostly dependent on if the driver was excessively speeding or not, wearing his/her seatbelt, and what they hit.
The one thing to be said is without the nannies, the car won't save you from yourself ... if you are used to mashing the pedal on a import 4 cyl while making a left turn, you're gonna end up in a world of hurt in the viper.
If you want more, look at the track accidents....cars flipped, hit walls at 100 mph and the drivers walk away.
None of this means anything to answer you question which is far to vague. To sum it up, the viper is a car of extremes ... from the posts I have seen it protects the occupants very well from your typical accidents, but being a vehicle of extremes many of the accidents are far from typical.