I was going to post in order to defend RPS and Walker, given that my interpretation of the original article was one of no wrong-doing whatsoever: as stated, the images were cropped down to make them more teaser-like (as opposed to trying to obscure their source, which is pointless, since they are exclusives), and multiple links and other directional-arrows were given pointing users to go to Game Informer, at which point they could benefit from the eyeballs. But, alas, Mr. Walker beat me here, and defended himself admirably.
So, I'm left with this: this article is the worst possible sort of "Fair and Balanced" presentation of two sides of an argument, attempting neutrality by giving equal weights to opposing sides, regardless of the merits of either argument. You might make the argument that RPS could've gone further out of their way to disfigure the images in question, or that there was no need to use clipped versions of the images to get across their point (as evidenced by the still perfectly functioning article sans Lara plus WikiCommons). To make it worthwhile though, you're also going to need to convincingly argue that the actions on RPS' part resulted in some harm to Game Informer (maybe... the snippets of image were so disappointing, that people didn't bother going to GI's site? Or... Walker's argument against the nature of the exclusive images results in some small segment choosing to boycott the images from their brains?) The much stronger argument is that Game Informer and their representative are acting the fool, by sending a cease&desist to a friendly that offered professional courtesy, and making no apparent overtures against the variety of sites blatantly "stealing" their material, with no reference to Game Informer at all. There may be two sides to this, but it is dishonest to present them as equivalent in the name of "neutrality" or some bizarre notion of what "journalism" is.