Don't know about the Gen 4 headlamps but those on my Gen 3 are fine by my standards. Am not concerned about this and other IIHS tests - suspect that "poor" ratings may be excuses for raising insurance costs.
2011 Upgraded Base V6 4WD
2007 Kawasaki Vulcan 900 Classic LT
2002 Craftsman LT1000 V2
Jesus is Lord