In TDE, "adventure points" were scarce (depending on the game master, of course). The general view on (A)D&D is, that its leveling upwards is much faster than that of TDE.

I'm not sure, but I tend to really see both models xisting at the same time :

- slower levelling
- faster levelling

with my of course very subjective impression that faster levelling is an "american phenomenon", and the slowe levelling rather "an european phenomenon". But i must also add that I know onl a few role-playing systems. Therefore my personal impression might be wrong, too.

My very personal impression/opinion is as well that slower levelling creates a bigger "feeling/impression of an achievement" than faster levelling. Wandering on a country road vs. travelling by car on a motor-highway, so to say.