... a controversy that played into the hands of the top brand manufacturers and people (like me) who buy their lids (even when some underperform in the Sharp tests). But I've never seen any evidence that supports the controversy - a not a single study of data collected from real-world accidents that shows the Sharp tests up.
I've a Shoei GYT Air. Like a lot of helmets with an internal sun visor, Sharp shows up a weakness on the left hand side (I think it's the left side, might be right). The weakness is associated with thinner padding where the mechanism for the lowering the visor sits. I reckon Sharp is probably right, and my head would be safer with the full thickness padding there, but I still chose this helmet because it's very comfortable, it's very quiet, it fits well, and the visor is a benefit I don't want to do without.