Not sure where you're based, but the Safety Helmet Assessment and Rating Programme[0] in the UK is my go-to for.. well, helmet ratings.

[0] https://sharp.dft.gov.uk/

That's sort of what I mean.

I looked up an Arai Tour X5, thanks for the link. It gives four stars and some colours for different zones at set impact speeds in m/s in a lab. It tells me it meets standard UN ECE REG 22.06 with a double D ring retention system and composite fibre materials. Super objective and necessary.

But I've read a lot of similar information and, somehow, seeing the results of a person being dragged down the road, for some unknown amount of time, which is pretty super subjective, still feels (perhaps wrongly even) as though it gives me a better understanding than just reading numbers/letters/colours.