>http://forums.carrionfields.com/dc/dcboard.php?az=show_topic&forum=6&topic_id=41529&mesg_id=41529&page=

There Daevryn is saying the levels are a little different and therefore the learning rates are a little different. That's fairly obvious, since it's explicit that you learn more vs higher level mobs, and the fact that they're higher level will make them a little tougher (even with otherwise identical stats). In that other thread I linked it really sounds like people are talking about a setting above and beyond level would do.