Amen to all you folks asking for real numbers. I've been very frustrated that this information isn't on the powers themselves in game.
Several times I've chosen a power based on the description only to find that the description was very misleading, and the addition of numbers would have made it clear to me that I should take a different one.
I'm not a min-maxer type, and I'm certainly not going to run numbers through the combat formulas to optimize my characters; But I'd like to know what I'm getting WITHOUT having to read 4 different player guides, which I don't have enough experience to judge the quality of anyway. (many of them seem good, but who knows)
The documentation with COX, both in game and without, is inexcusably craptastic.