Earlier quoted context omitted.
Please read the article again: "passengers in a typical EU model are 33 per cent safer in front-side collisions, an accident that often results in serious injury, than those in a typical US model." Less deaths and injuries if cars meet EU standards
I read that, I saw the difference. Sorry I wasn't clear in my original post. I meant: what causes the difference? Why is there such a big difference?
I guess it's all a trade off of material/weight vs performance. If you make a more rigid passenger compartment then it might weigh more and your car might be slower. Or maybe you have to spend more on a stronger type of steel that is more expensive. Or you have to make something more complicated to be safer.
So on average maybe the US cars come down on the lighter/cheaper/faster side of the curve. Obviously the trade offs are incredibly complicated.