Nope. The STB statement means that they enjoy the same rights as you as the creator of the images. This however implies that none can thereafter give exclusive rights. Therefore it impairs the owner/creator's rights in so far as not being able to give exclusive rights only.
Creator/owner can still sell the images but not the exclusivity.
Putting aside condition #18 for now... STB has committed itself to say, on the cover page, that they will only "put it on the web, on print, and use it in our promotions."
These rights are very much more limited than ours. Eg we can sell our images, but STB will not.