Thanks for the info. I hope that the finnish vendors could be this helpful in our motorcycle forums.
So the shell size is bigger on both helmets from M to L. I'm leaning towards the size S AFX on this comparison. It might be a snug fit though.
Luckily we don't get AFX helmets in Europe so everybody wins. Atomic-moto is getting paid. Postage will go to post office and the finnish tax officers are getting the vat. Last but not least, I'm getting a great helmet for couple of euros.