Hello , I am trying to learn about differences in levels of safety between helmets. Ok, general consensous seems to be that all helmets are equal in terms of protection, since they all have to pass the same requirements, with the exception maybe of those with MIPS.

Well, US, Europe and Australia, safety test are different, Australia is suppose to be tougher than the other two. Could this be some kind of an indicator of a higher level of security? A helmet that is certified with the 3 of those test could be safer than, lets say a helmet with only the european test?