the highest average potency recorded is in the united states europe is catching up.. let's say the difference is that we europeans have been used to smoking it with tobacco because in the past there was only hashish and of poor quality americans are healthier, at least from this point of view, because they smoke it pure plus it's legal, which doesn't hurt anyway, I hope things change for the better here too in europe it's illegal in most states... soon it will also be legal in germany but with thc limited to 15% anyway, it should be the united states, then spain and the netherlands; canada has a strange legislation