Well Brant, I just installed DxO to give it a quick try. I must say that it does a lot to the original photo in the basic settings.
The DxO version of the cat is my favorite of the three, but as I said, DxO does quite a few corrections and in my opinion this isn't a good comparison.
In my case DxO automatically enables things like DxO Lighting and Noise-adjustments. They look good on some photos, but I've also seen a few photos where these settings make the photo worse. In my case I personally prefer to see the photo on my pc as it looked on the back of my camera. Therefor I also do not apply any filters(like lens correction) to any of the photos I import in LR. Perhaps this is also possible on DxO, but I haven't found it yet.
I must honestly say that I don't like the workspace in DxO for now. I'm used to work and view my photos a lot in 100% and just dragging the photo around the screen.(to look for imperfections for example) In LR3 I can do all that with just the left mouse button and without having to click on the hand-tool for example to drag the image around. In DxO it shows the "before" image when I click on it. This does not make a lot of sense to me, since I like to work with what I see and not with what it was before.

I'm definitely going to try DxO out more thoroughly, but for now I cannot really give a good opinion. It does seem quite slow when processing the photos, that's for sure.

Jan