A friend (who is not at all a Twilight fan) called me this afternoon to be sure I saw Time Magazine's article Stephanie Meyer: A New J.K. Rowling? Lots of interesting stuff in it.
The author does make some legitimate comparisons between Meyer and Rowling. In addition to that, I think that when most people talk about looking for the next J.K.Rowling, what they mean is the next author who will make big sales. Meyer certainly has done that.