I've seen others talking of how they reached level 45 in dragon sphere all the while I'm level 57 and critical often and I'm barely half way through mooshu, is this problematic? I certainly enjoy one hitting all bosses with a crit frost giant but it seems a tad overpowered for a realm meant for level 30-40.
There really is no maximum level in any place. My brother, a level 29, is having fun blasting elves at Firecat alley at the moment. As long as it doesn't supremely bother you, it's fine.