Not sure if you’ve come across this topic yet for large breed pups, so here it is:
/forums/topic/large-and-giant-breed-puppy-nutrition/
It has more article links and food recommendations. And here is the link to the PDF list of foods (around page 15 and again around page 35 in the large breed pup topic):
https://docs.google.com/a/dogfoodadvisor.com/file/d/0BwApI_dhlbnFTXhUdi1KazFzSUk/edit?pli=1
Also, manufacturers change their recipes whenever they want to, so it wouldn’t hurt to double check on the foods that you are interested in.
It comes down to controlled calcium and the proper calcium to phosphorus ratio for large breed pups. Other than that is marketing.
