I asked mostly for the conversation value, I certainly am not sure of anything myself!

Well, a really spread out distribution across the universe would explain that.

It would, but then there's the 'why' it's spread out. Maybe that's answered in the particle predictions but something is keeping it apart, but doesn't affect visible matter in the same way. It's obviously spread out just enough to not be clumpy, but not so much that it can't pull a galaxy together. If it were everywhere it wouldn't have the effect we think we see.