As one would expect, it concludes that it's a damn fine camera! It can't quite match the D3/700 at the very high ISOs (it is very close) but at 21mp I'm not sure if that was ever a totally realistic expectation apart from by the Canon devotees.
http://www.dpreview.com/reviews/canoneos5Dmarkii/
http://www.dpreview.com/reviews/canoneos5Dmarkii/