Isaiah Cartwright posted a new blog which discusses the changes that have been made to the dynamic leveling system. You may have noticed that when playing in lower level areas that you are getting better rewards, and that your stats are more in line with that particular level. You’re still a bit over powered, but not nearly as much as previously. He states in the article:

As of the January 28 build, we made some changes to the dynamic scaling system to address these issues:

1.) We changed the formula for how attributes are calculated when the dynamic leveling adjustment system scales you down. This makes returning to lower level zones more fun and better balanced.
2.) We changed the formula for how rewards are calculated when scaled down to make it more rewarding for high-level players to visit lower level areas.

Check out the full article here for further details.