Another expansion question

By McRae, in Descent: Journeys in the Dark

Which expansion helps out the overlord player the most? Which expansion helps out the heroes the most?

The feats in ToI easily help the heroes the most.

I would say for RTL the blood apes help the OL the most.

The all got stuff for both sides. That being said, I beliece AoD is more OL boosting and ToI is hero boosting.