Generally speaking the use of another's copyrighted images for purposes of comparative advertising or product comparison has been routinely held to be a "fair use". In a case mostly on point, about 10 years ago, Sony objected to the use of screen shot images from its PlayStation by a third party. At issue was the showing what an actual game screen shot looked like when played with the PlayStation console on a television screen, versus what it looked like when played with the alleged infringer'...