In fact, you can go much further. Think about the number of magazines available which compare things. Cars, TVs, washing machines, etc. Not only do they show the product, including the logos, but they also publish their opinions of them. If a reviewer thinks one manufacturer's washing machine is inferior compared to another, they will publish this opinion.
Originally Posted by Steve Smith
This information can be much more damaging to a company than a mere book of photographs. The comments cannot be claimed to be defammatory as they are based on actual tests so the manufacturer has no comeback (except perhaps to stop advertising in that magazine!).