The IIHS (Insurance Institute for Highway Safety) is a really neat place to visit. Having worked for a major insurance company for 20 years, I had the opportunity , twice, to go there and watch two cars being crashed. The IHHS is in Ruckersville, a small town 12 to 15 miles north of Charlottesville VA. I live in Richmond VA which is about 90 minutes southeast of Ruckersville. The facility is open to the public and they have a small museum of cars they have crashed over the years. Each one tells how well or poor they performed and also indicate, from crash dummies used in the tests, the extent of injuries received or death of the driver.
The reason the tests performed by the IIHS are really accurate is the frontal crash is not head-on but is a 60/40 offset of direct head-on because information obtained from massive accidents over the years has supported the 60/40 offset way more often. Also the test is performed at 40 mph. The government safety test is a direct head-on at 30mph.