IIHS has really tighten the impact (collision) requirements since 2011 or 2012 (thereabouts). This corner side-impact has initially failed many, many automobiles during the 1st year when the new requirements came out, incl. the 2012 release of camry, amongst many other automobiles in many categories.
I wouldn't be all that surprised if fit or many other subcompacts would fail in that category...citing that the requirements is almost to the point of being nit-picking.
While I must say that bigger automobiles may provide more margin of safety, but I still feel safe even in my 06 fit, when compared to all the other accidents I had in the past: crashed a 81 GLC during a blizzard, all 4 occupants walked out of the car with very little scratches; rolled over in a 93 4-runner due to driver's fault (black ice, 4wd mode), front windshield completely collapsed....occupants walked out with minor bruises...
I would like to see my cars passing Euro Encap tests but realistically speaking: NA's IIHS tests are stringent enough to be safe to begin with...if you are to compare to some mainland chinese cars avail outside of N.A. market.
Q.