Marvel vs. City of Heroes Editorial

An article on law.com discusses the circumstances surrounding the lawsuit between Marvel and NCsoft/Cryptic Studios, as well as what ramifications the outcome could have. A snippet:
Enter Marvel and its league of lawyers. Marvel filed suit against the operators of "City of Heroes," alleging copyright and trademark infringement, as well as a variety of state law claims. The chief claims are for contributory and vicarious copyright and trademark infringement. In other words, Marvel's complaint is premised on the notion that NCSoft and Cryptic should be held responsible for the infringing activities of the players in the game. According to the complaint, the players are infringing Marvel's copyrights and trademarks by creating characters that are recognizable copies of Marvel characters, including Wolverine and the Incredible Hulk.

Yes, you read that right -- Marvel's claim is based on the idea that private individuals who pretend to be Wolverine for fun in a video game are breaking the law. Since when is it illegal to pretend to be your favorite superhero? Should parents be policing their kids, lest they be caught "pretending without a license"? Were all those drawings of the X-Men on grammar school notebooks evidence of infringement? And what about all those homemade superhero Halloween costumes?