Cacao powder has been dried and fermented at least, and usually it's roasted too. There is something else done in dutch processed powder. It's probably a very different flavor. I've never thought to eat the seeds raw, but now I will try them at some point.
I disagree. After drying for a few days they just taste like unsweetened chocolate to me. Very similar to the cacao nibs I used to purchase, which are indeed just broken up seeds.