You'd be surprised the damage a proper steel bullbar can negate to to the passenger compartment. Will try and find the picture of a landcruiser that left the road at 100 and hit a stationary object at close to that speed due to driver falling asleep.
Also know of somebody who's car left the road, went through a fence, across a creekbed, through a fence and hit a tree. Driver was unconscious and was on a 100km/h road aswell. Car was a Pajero with a steel bar.
In both cases, the bigger car probably saved the drivers life.
Sabbath
We are digressing from the main theme of this thread here, but I can't agree that a bull-bar adds to the protection of the occupants in a serious collision. Certainly, in minor prangs, they prevent damage to your vehicle but will probably cause major damage to the other car. However, in a major collision, the rigidity of the bar prevents the bodywork of the vehicle from using its progressive crumple zones properly and effectively. The bar has no compliance to absorb part of the impact - it will transmit the impact through its mounting points and focussing the force of the impact on those two or three points, rather than dissipating the impact through the front end structure. They also affect the triggering of air bags, because the initial fractions of a second of impact are taken by the bar and not the car itself, delaying the activation of the airbags. If you look at the factory bars designed for Falcons and Commodores, which were both designed with airbag activation in mind (ie their presence doesn't delay the triggering of the airbag compared to a car with no bar fitted), you can see that they are quite different in design and structure to the old railway track bull-bars hung off so many 4WD's. Most of them are agricultural in design and have little or no impact absorption built in, unless they are the latest aluminium types. The old steel bars are just like solid walls of steel in a big impact.
I don't think that photo you attached proves anything. It would be interesting to see how the Landcruiser fared without the bar in the same impact, but I suspect the occupants would still be pretty badly banged around. I don't think the bar would have reduced the seriousness of the impact or their injuries. After all, the Cruiser is a huge hunk of metal without a bar and for it to be as badly damaged as that, it must have hit extremely hard.