You've misunderstood.
The first set is my translation of the WoW power reset schedule you described. The number of seconds or minutes of real time, and how they interact with encounters, seems to translate to me as: 1) multiple times per fight, and a bunch of times in a big fight, 2) multiple times per big fight, and 3) multiple times per day, not every encounter if the encounters are close together.
The second set in my post is what 4E has. 1) every single round if you want (at-wills), 2) once per fight, or less if the fights are too closely spaced (encounter powers, and 3) once per day (dailies).