i got hit in the rear in my 04 dynamique, got hit about 10-15mph and my car was close to a write off according to insurance and the repair garage, the spare wheel had popped up under impact and my car was about 3 inches shorter due to the impact, it needed a new spare tyre because that had been damaged by the interior plastics, these needed replacing, as did most of the boot carpets, i managed to get some scratches sorted aswell because of the other blokes 'debris' glass which was lucky!
i think it depends from car to car on how well they are made, i kn ow its a production line however there are some better than others, and also i had my brakes on slightly, and they stopped the car bouncing forward, however im guessing because you hit the car infront of you your brakes wernt on?
feel sorry for you mate, i know how much hassle it is, and hope you get it all sorted, i suppose the only brightside is that at least it isnt a claim in your name so after it's all done you shouldnt have a problem with insurance.