Can't get my head around this one (pun intended). Searching for a replacement helmet as my HJC's are falling to bits, but it seems that the more you pay for better materials the worse the safety rating becomes. i.e. The lower to mid range HJC C70 at £100 made of polycarbonate has a good safety rating. https://sharp.dft.gov.uk/helmets/hjc-c70/ The mid to high end RPHA 11 from around £200 made of composite fibre material has a poor safety rating, mainly on the sides. https://sharp.dft.gov.uk/helmets/hjc-rpha-11/ The top end RPHA 70 from around £270+ made of carbon fibre has an almost as poor rating as the RPHA 11 https://sharp.dft.gov.uk/helmets/hjc-rpha-70/ Am I missing something here as I've always had the RPHA series as I was sold on the composite shell, but if the safety rating better on the polycarbonate models (a step up from thermoplastic) then why would I spend another £200?