Even the H22 has knock sensors. But that only means that if you run lower than 95 and ping it will retard the timing. It will not advance it.
I would hazard a guess and say the car doesnt advance the timing until it knocks every time you run the car to "sense" its RON. I am interested to learn how they actually detect it when they are able.

Someone said that Japanese cars may be able to do it because they run 100 RON over there... Well the fact is that unless its an import the cars have different ECUs and certainly have different tune states between domestic markets.
So unless it specifically can adjust itself to make use of it, 100 RON wont help. Especially 100 RON made of 10 percent ethanol, as it actually has less energy per litre than normal petrol.

Its very difficult to look at a dyno figure and take it as fact because they are actually very imprecise as well as inaccurate. Even back to back tests arent very reliable due to heaps of variables.