About Star Wars canon, the official stance is that it all counts to some degree or other, but the truth of the matter is that they're exactly the same as the Trek novels. George Lucas only allowed SW novels in the first place if they followed the precident of Star Trek's! http://en.wikipedia.org/wiki/Star_Wars_Expanded_Universe That's according to Gene Roddenberry himself. The details of why are here: http://www.trekbbs.com/showthread.php?t=208597&page=8 In short, he believed The Romulan Way to be a non-Trek novel which Diane Duane tacked McCoy sub-plot onto in order to make a quick buck. Many disagree, and the current novelverse Romulans are still heavily based on Duane's Rihannsu.