if I had to use a nutshell definition I would say that the AKC = lineage = purebred. i also believe that AKC breeders are breeding to standard. so, yes, there are differences.
in reading your other posts, i see that you have an aca pup that you are planning to breed. would her not being an akc pup change your plans as you learn more about the differences between the two? i've read your eventual plan is to breed the 'best of the best', from what I have learned so far on this site, i think the belief would be from a breeding perspective, that the 'best of the best' would be akc registered pups.
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