Well, this IFC.com article today did just that — as part of a broader analysis of Cameron's love-hate relationship with technology:
Cameron made "Aliens," the nightmarish counterpart of "Avatar"'s utopian dream. In both films, human colonists and strange aliens clash on a distant planet; in both films, technology proves ill-equipped to defeat the natural world. It's interesting, though, to consider how much Cameron's new film inverts the earlier one, despite their numerous similarities. In "Avatar," the Na'vi are basically alien hippies; in "Aliens," the titular creatures are remorseless, bloodthirsty xenomorphs. In "Aliens," the heroine, Ellen Ripley (Sigourney Weaver) agrees to join the Colonial Marines on their mission only when they agree to annihilate, not subdue, capture or study, the aliens. In "Avatar," Jake Sully (Sam Worthington) rejects his own species and decides to help the Na'vi because of the Marines' desire to annihilate anything that stands in the way of their acquiring the minerals they're looking for. Both films end with a showdown between an alien and a human inside an enormous robotic suit, though the ultimate outcome and the character who the audience is supposed to root for is quite different from movie to movie.