World of Warcraft has been stolen?

http://www.wowinsider.com/2008/12/02/chinese-mmo-rips-of-world-of-warcraft-others/3
Ok, this is an interesting one. Going back to our first few classes and copyright infringement. This kind of law dates from decades ago and i wonder if when developed it was ever expected to cover the rights of a virtual imaginary world created for a video game. This is now what is considered works of art also, as so, they enjoy benefits of copyright for their owners or creators. In this case a Chinese MMO creator has been accused of ¨stealing¨ parts of the world designed by and for the famous video game WOW. Most elements are easy to prove in a case like this, like the material proof of acces to it and definition of both. But, it could as well make the opposite argument.
Many media outlets nowadays reflect ¨worlds¨ or scenarios whisch share things in common, as consumers before creators we are influenced by the same movies, previously existing videogames, fantasy books, etc. Who is to say that WOW was not stolen from Lord Of the Rings, and those worlds could even date from predecesors of Star Wars and such.
I think maybe a factor that could be taken into account with the analysis of these modern type of cases is the fact that there might be a ¨natural¨evolution in the process of ideas. Mass media has made it so we have all access to all the media outthere. Ideas have an origin, many times, even if not intentionally, the origin might be the same.
Aha,! wonder if that´d be strong enought to convince the jury in this case? maybe the Chinese company can pay me a few bucks if they use this idea for a defense! or I´ll sue!