If you look at the graphs in the top post (they are the same as in the Excel file), you will see that I've looked mostly at At-Wills, but I've also done an analysis for Level 11 Encounter Powers.
However, it doesn't make that much difference. For At-Wills, Rangers are on top, and Warlocks at the bottom. It's the same with Encounter Powers, but Warlocks are actually slightly worse.
I didn't do dailies, but I expect the same pattern to come up.