Personally, this mod is going to tell you Pathfinder. But 4e simply doesn’t exist my in world and I have also never played Pathfinder. Why am I answering this? Because I know a few facts all the same.
Pathfinder was the lovechild created when Wizard’s created 4e. It seems as if you are either in “I love 4e!” or “4e is trash”. 4e was created in an attempt to compete with massive multiplayer online games. It took World of Warcraft and made it a tabletop. What may have been a smart idea was a failed concept. Why play a tabletop with people when you can wear no pants, not be judged for not showering because you’ve been raiding, and best of all not interacting with real people for an extended period of time? On the pendulum of Fighting and Roleplaying, 4e swung hard to Fighting. 4e is a great beginner edition to test the waters and see if you, or your group of friends, would be interested in the sort of nerdom.
Now back to Pathfinder. Pathfinder, as I understand it, is what 4e should have been after 3.5e. It is often called 3.75 rules/edition (at least where I’m from). 3.5 is amazing but it is awfully dense with rules and some aspects are pretty over powered or even under powered. Pathfinder improved upon 3.5e while adding it’s own flavor and twist. It is fairly balanced in regards of Battling and Roleplaying. It will really depend on who your GM is and what aspects your group likes more.
This is just one humble opinion mind you. People who love 4e have their reasons and I think that is awesome. It’s just not this mod’s scene.