Perhaps it's more of a question of playstyles. Dungeoneering, there's always a greater range of abilities. On the one hand, you can be much stronger than your level suggests with one roll and fail the simplest things on the next. And that sort of thing doesn't really need a driving plot, because the rolls do drive the game in a sense. Pathfinder is much more suited to a moving plot because you know what your abilities are and how you can progress on that plot. Both are fun, but it is nice to play a game of Pathfinder once in a while instead of succumbing to the natural chaos of the tavern and playing Dungeoneering.