Jetrangers, 500s, 407s A119s and many other helicopters have support all over the place. Between the doors, in the center of the cabin, along the upper deck, in the windsheild etc. They are designed to crash, and many people have made it home to their families as a result of that principle.
Astars on the other hand...despite being a heavier helicopter, have only support in the floor. When you see them without the doors on you really get an appreciation to the lack of structural support. If you roll over in one your chances are less than stellar. Astar wrecks always seem to have the tail, the mast bent over with bits of blades and nothing where the front fuselage used to be. Its blows me away some of the accidents people have survived in astars.
Chances are if I have an accident it will be my fault in a perfect good helicopter. I sure hope it doesn't happen in an Astar though.