PJ2, in the Congonhas accident there was a small berm at the edge of the airfield as well, around 60cm high if I recall correctly. The fully laden aircraft traversed the road and impacted the TAM building, about 100m from the berm at the edge of the field and 10-12m lower, and head-on.
Would the fact that the TAM Airbus managed to "fly" that distance not indicate, in itself, a much higher impact speed than the 204? Or would the 204 not have bounced off the nose gear and concertinaed had it been heavy?