NA/EU servers tend to relies on statics to do anything which means you have to find 8 people who play the roles and set aside a few hours a week to meet with em which creates the hardest part of raiding getting into the raid. JP servers are able to pug for the most part and unlike us who have like 4 different youtubers with 4 different starts and people who been in statics make up there own custom strats. so when all of that tries to pug it becomes a nightmare because no one is on the same page.