Royal Cannin Vs Royal Cannin Pro, is there really a difference?

Is there really a difference in products of the Pro series vs the regular breed specific? Or am I going crazy or is it just a fancy label and picture on the same product? 

PRO Persian Professional Series 

http://www.royalcanin.us/products/p...al-feline-products/breed-specific/pro-persian

Royal Cannin Persian 

http://www.royalcanin.us/products/products/cat-products/feline-breed-nutrition/persian

Boy, I sure don't see any difference.  I didn't compare ALL  the ingredients, but did compare the  Analysis Table, calories, and at least the first 10 - 15 ingredients.  BUT, I will say that I don't really think this is a very good food (just my opinion).   Having to guess at the % of ash (since it's not provided), the carbs are pretty high at around 30% on a dry matter basis.  That's way high in my book.

thank you for your help, sorry haven't been on lately we are trying to find the food right for our cat, and not what the vet is "pushing" not saying our vet is not well educated or anything. Just want to be educated on nutrition the best. Is there anything you recommend? We are learning that Royal cannin as over priced for what it is unless you move up to the vet versions.