Hey mate they are definately all the same - just seems that many of the suppliers are a bit on the lazy side when it comes to up-dating their listings. I had the same concerns when looking at accessories, including exhaust components, when up-grading on my new 2012 WRR. At the time even the factory Yamaha listings were about a year behind on their listings for this bike.... But all good for interchangeability right up to current 2013 MY.
Cheers.