Badwe, maybe I'm not understanding where you're going and will need to wait for the example...
In an old-school throwback model, dungeon level *does* equal encounter level... yes yes, it may seem illogical, but it's part of the players being able to make good choices about their level risk/reward (part of challenging the players).
One of my (minor) quibbles with
4e is the idea that challenges will always scale... when you go into the woods at level 1, you fight level 1 orcs.
4E philosophy says , suddenly the woods are full of level 10 threats when the guys are level 10! My approach would be to have two sets of woods, and they pick where to go...