Some budget helmets score very well on sharp, blunt, oblique and graze impacts but where u gain with these is comfort, low noise and low condensation which makes a huge difference over long distances
That's a good point. One thing to note from the Sharp test is the flip front stayed attached 100% of times in tests, which for me indicated it's as secure as a full face. Also BMW Helmets were rebounded Schuberth too.
I think the Sharps test a bit theoretical and we don't have accidents that way. Also factor in that if the helmet is a LOT more comfortable and quieter you are less likely to be distracted. I believe most of the Police motorcycle riders use the C4.
Check SHARPS : some Schuberth helmets don't score well. https://sharp.dft.gov.uk/helmets/?manufacturer=Schuberth&model=All&type=2
These are the Rolls Royce of helmets - VERY highly recommended