That just looks like an ad for Arai. There is much more to helmet design and different helmets are suitable for different purposes, just as different standard vary. BS, EU and Snell testing all tests for different things and you need to understand what is being tested to make a good choice. For example Snell test helmets for optimal performance at high speed, this mean that you are more likely to live from a high speed impact but also more like to suffer brain damage at lower speeds. If you ride a moped then a Snell rated helmet may not be the wisest choice.
Pushbike helmets vary in a similar way but here the vents cause the problem, in order to have extreme venting the remaining foam must be stiffer to compensate and doesn't work as well as a helmet with normal vents. Unfortunately there is little in the way of facts available about helmets and it is not easy to make an educated choice. A major problem with all helmets is the straps, they are fitted badly and come off making them useless. If you are going to wear one then do it properly.
BTW I'm indifferent about helmets, sometimes do and sometimes don't but I will defend the right to choose.