(The PC version of Black Ops, which has its own ups and downs, is not factored into the comparison.)
The results likely won't be a surprise to discriminating Call of Duty fans, as the site's analysis of last year's Modern Warfare 2 resulted in a similar conclusion.
If the only thing preventing you from picking up a copy of Black Ops is the number of vertical lines on the screen or the mip-map quality of a cigarette pack texture, this is required reading before a purchase.
Face-Off: Call of Duty: Black Ops [Eurogamer] [Kotaku]