From Scotty Ernst

"It is November and that means it is time to start preparing for the AOC Finals at the World Famous Yatabe Arena. We have most of the best onroad racers from around the World making the trip to Japan so it will again be a fantastic finals.
We want to let everyone know for the stock classes. 13.5, 17.5 and 21.5 we will be doing a maximum KV test for these motors. The maximum KV allowed are as follows.
13.5 = 3100
17.5 = 2300
21.5 = 2000
We will test the racers motors during practice on Friday and Saturday morning before we begin and then mark them, this will ensure the fairest event possible. We have done this at previous AOC events and the process works very well."

Great idea, but... IMO those who are coming from outside countries that don't follow JMRCA rules will have a tough time in 1/12th 21.5. The allotted KV values will in my mind favor motors with larger rotors, because a bigger rotor will yield a lower KV which will result in more peak power. Therefore, someone who's running a large rotor say 14.00 mm (yes, it's legal), can maintain a really low KV and gear the living hell out of it to gain back the RPM. However, those who are arriving with 12.5 mm rotors, will have a harder time.