Thanks for the info guys.
The difference that I'm seeing here between TL and AP is that there would be more fluctuation in the highest possible score achieved since the leveling structure is different. As such, the key to achieving the highest possible score might be to have a good game with the right class and great luck with +XP items.
Paladin used to be a shoo-in class for me with regards to maxing Learning asap and getting Resurrect. But without Resurrect... hmmm, maybe its time to experiment with a new class.