Here is the 6D Review. This one is loaded with samples to so you can see for yourself how it does.
Kudos to the reviewers for being honest.
Here is an excerpt from their conclusion, which I completely agree with:
- ... it was as if Canon was intentionally disabling features and including others to make this camera not step on the toes of any other camera available. As a result, it almost felt like this concoction of features from a variety of other cameras rather than a camera built with a specific user and a specific purpose.
Overall, the 6D is more of a don't-switch-to-Nikon camera or a buy-the-5DIII camera than a camera that holds on its own.