EU>NA...but not on server quality
Yesterday I was just telling my premades "It's the release of a new game mode and a new event and the server didn't crash this weekend, I am actually impressed..." Aaaaand EUW just crashed. If the quality of the server increased at the same pace as the rate of € to RP, then our server could actually host North Africa (like it currently has to do, because they don't have a server of their own 10 years later...)