Yep, Aust. Standards are tougher for a lot of things. However, SNELL approvals meet and exceed Aus Standards (although some people think vice versa). SNELL tests actually include a penetration test as well on the off chance you fall and land on a spear or someone tries shooting at you.
HAM - Firstly, I wasn't flaming mate. I swear much more when I do
And secondly, I did read your posts thoroughly, perhaps you should word them better. I know of several certified helmets that wouldn't protect nearly as well as the aforementioned Protec because certification only requires the area protected by the helmet to be protected. Minimalist roadie helmets still pass certification yet serve absolutely no use in skate parks where coping and square edges abound.
On another note, I still wish organisers of the Tour and other roadie competitions would insist on competitors wearing helmets. Imagine the uproar if the X Games let street competitors ride helmetless....